Viral infectious disease

This expanded access program lets doctors in Texas give banked, partially matched virus-specific T cells to children under 18 who have persistent or recurring EBV, CMV, adenovirus, or BK virus infections after an allogeneic stem cell transplant or CAR T therapy. The cells come fr…

This study tests a new two-drug combination (ASC22 and Peg-IFNa) to see if it can functionally cure chronic hepatitis B. About 150 adults with low virus levels will receive the treatment. The goal is to raise the cure rate above 50% without needing lifelong medication.

This pilot study is testing whether a 4-week course of two antiviral drugs—sofosbuvir plus glecaprevir/pibrentasvir—can cure chronic hepatitis C in people who have not been treated before and have only mild liver scarring. Participants who relapse after the short treatment will r…

This study tests a collaborative care model where pharmacists, doctors, and patient navigators work together to provide hepatitis C treatment to people who use drugs and live in supportive housing. 444 participants will be randomly assigned to either this model or usual care. The…

This study tests whether a low-barrier hepatitis C treatment program can help people in jail start and finish their medication more easily. Forty adults awaiting trial at the Rhode Island Department of Corrections will receive a 12-week course of the antiviral drug Epclusa. If re…

This large phase 3 trial compares an investigational mRNA flu vaccine with a licensed flu vaccine in adults aged 65 and older. Each participant receives a single injection and is followed through the flu season. Researchers measure how well the mRNA vaccine prevents laboratory-co…

This study tests an experimental flu vaccine called BPL-1357, given as a shot or nasal spray, to see if it is safe and can protect against multiple flu types. About 129 healthy adults aged 18-55 will receive the vaccine or a placebo, then be exposed to a flu virus in a controlled…

This early-stage trial is testing a new COVID-19 booster vaccine called OCU500, which is given as a nasal spray or inhaled mist instead of a shot. The study involves 80 healthy adults aged 18-64 who have already been vaccinated against COVID-19. Researchers are checking if the va…

This early-stage trial is testing a new HIV vaccine booster called VRIPRO, given with an immune-boosting adjuvant, in 40 healthy adults aged 18-60 who previously received an HIV vaccine in the HVTN 706 study. Participants will get three shots over 24 weeks. The main goals are to …

This early-stage study is testing two new vaccines (V350A and V350B) designed to prevent diseases caused by the Epstein-Barr virus (EBV), which can cause infectious mononucleosis and is linked to certain cancers and multiple sclerosis. The study will enroll 250 healthy adults and…

Researchers are testing a single injection vaccine designed to protect adults 60 and older from two respiratory viruses: RSV and HMPV. The trial plans to enroll about 8,000 participants who will randomly receive either the vaccine or a placebo. Scientists will track who develops …

This phase 2 trial tests a CMV vaccine (CMV-MVA Triplex) given before a liver transplant to see if it reduces the need for antiviral drugs after surgery. The study enrolls 416 CMV-negative adults awaiting a liver transplant from a CMV-positive donor. Participants receive two vacc…

This trial is testing a new vaccine called rBCG-N-RSV, which is based on the BCG vaccine (used for tuberculosis) but modified to also target respiratory syncytial virus (RSV). The study involves 200 adults over 60 years old, who will receive either this new vaccine or the standar…

This early-stage trial tests an experimental flu vaccine called FluMos-v2, with or without an adjuvant (ALFQ), in 45 healthy adults aged 18-50. Participants receive two shots four months apart and are followed for 15 months. The goal is to check safety and how well the vaccine tr…

This study tests a new chickenpox vaccine called NBP608 in about 780 children aged 1 to 12 years. The vaccine is compared to licensed vaccines to see how well it triggers immunity and if it is safe. Children receive one or two shots, and researchers monitor their immune response …

This trial is testing an experimental vaccine against H5N8, a type of bird flu, in healthy adults aged 18 and older. The vaccine is made using eggs and is given as two shots, with or without an adjuvant—a substance that may boost the immune response. The study aims to see if the …

Researchers are testing an experimental mRNA vaccine called ABO1108 to see whether it can prevent herpes zoster, the painful rash also known as shingles. The trial enrolls adults aged 40 and older, including people whose long-term conditions are stable. Participants receive two i…

This early-stage trial will test two experimental mRNA vaccines designed to teach the immune system to make antibodies that target HIV. About 42 adults with well-controlled HIV will receive the vaccines and then temporarily pause their regular HIV medication under close monitorin…

Researchers are testing an experimental vaccine called INT101 to see if it is safe and can trigger an immune response against norovirus. The trial enrolls about 30 healthy adults aged 19 to 48. Participants receive either a low dose, a high dose, or a placebo as three intramuscul…

This study tests a new dengue vaccine called V181 in 12,000 healthy children aged 2 to 17. The goal is to see if the vaccine is safe, triggers a strong immune response, and reduces cases of dengue fever caused by any of the four dengue virus types. Participants will receive eithe…

This early-stage trial is testing an experimental mRNA vaccine called mRNA-1469 to see if it is safe and can trigger an immune response against Ebola-Bundibugyo virus disease. Healthy adults aged 18 to 65 will receive either the vaccine or a placebo. The study focuses on safety a…

This early-stage trial tests an experimental mRNA vaccine called YKYY025 designed to protect against respiratory syncytial virus (RSV). Healthy adults aged 18 and older receive a single injection of either the vaccine or a placebo. Researchers monitor safety, side effects, and im…

This early-stage study tests a new flu vaccine (STEMos1) in 56 healthy adults aged 18-50. Half of the participants get the vaccine with an adjuvant (a substance that boosts the immune response), and half get it without. The goal is to check safety and how well the vaccine trigger…

Researchers are testing whether a new oral polio vaccine called nOPV2, given at birth, helps infants block type 2 poliovirus in their intestines. The trial enrolls 740 healthy newborns who have received standard injected polio vaccines. Scientists will check stool samples for sig…

This phase 3 trial is investigating whether giving a repeat dose of the RSVpreF vaccine to immunocompromised adults is safe and triggers a strong immune response. Participants, aged 18 and older, will receive one shot and be monitored for about a year. The study aims to find the …

This study tests two experimental vaccines against Epstein-Barr virus (EBV), which causes mono and is linked to cancers. Researchers will give 750 healthy adults aged 18-29 three shots over several months to check for side effects and immune response. The goal is to find a safe v…

This study compares three different flu vaccines in 60 adults with blood cancers like leukemia or lymphoma. The goal is to see which vaccine triggers the strongest immune response in people with weakened immune systems. Participants will receive one of the vaccines and have their…

This large study will test the LC16m8 mpox vaccine in nearly 12,000 people aged one year and older in the Democratic Republic of Congo. Researchers want to see if the vaccine can prevent mpox disease and monitor its safety. Participants will receive the vaccine as part of the gov…

This trial tests whether a single dose of the 9-valent HPV vaccine triggers the same immune response as two doses in healthy adults aged 18 to 45. Researchers will measure antibody and B cell responses in blood, lymph nodes, and bone marrow. The goal is to understand how the vacc…

This study tests whether a combination of a culturally tailored video message from an HPV cancer survivor and a reminder phone call can increase the number of adolescents aged 10-12 who get the HPV vaccine. The intervention is delivered through a patient portal and direct outreac…

This study is testing how well the 9-valent HPV vaccine (Gardasil9) triggers an immune response in people born male who have used estrogen or androgen blockers, including those living with HIV. Participants receive three doses of the vaccine over six months, and their immune resp…

This early-stage trial tests a new vaccine called WGc0201 in 9 adults with chronic hepatitis B who are already on standard antiviral therapy. The vaccine is designed to boost the immune system to clear the virus, potentially leading to a functional cure. The main goal is to check…

This study tests a new COVID-19 vaccine called VYD2311, given alone or together with an existing mRNA COVID-19 vaccine, in healthy adults aged 18 to 49. The goal is to check safety and measure the body's virus-fighting antibody levels. Participants receive one injection and are m…

This study tests a bivalent HPV vaccine in healthy infants (9 months), toddlers (15 months), children (2-5 years), and unmarried young women (15-20 years) in Ghana. Researchers want to see if the vaccine is safe and triggers a strong immune response, especially when given alongsi…

This study tests a new vaccine called BBV87 to see if it can safely protect people from chikungunya, a virus spread by mosquitoes that causes fever and joint pain. About 1000 healthy volunteers aged 12 to 65 will receive the vaccine and be monitored for side effects and immune re…

This study compares a high-dose flu vaccine to the standard dose in 312 children aged 3-17 who have received a kidney, heart, or liver transplant within the past two years. The goal is to see if the high-dose vaccine triggers a stronger immune response and is just as safe. Partic…

This study tests a new program to help more children get their flu shot while in the hospital. The program brings together doctors, nurses, and families to make vaccination simple and routine. Researchers will track how many eligible kids receive the vaccine across 22,000 partici…

This study tests the shingles vaccine (SHINGRIX) in 160 people: transplant recipients on different immunosuppressant drugs and their healthy housemates. Researchers will measure immune responses at five time points over a year to see if the vaccine works well in these groups. The…

This study is testing a new tuberculosis vaccine called MTBVAC in 276 adolescents and adults in South Africa, some of whom have HIV. The goal is to see if the vaccine is safe and triggers a strong immune response. Participants will receive either MTBVAC or the standard BCG vaccin…

This study compares an adjuvanted (boosted) flu vaccine to a standard flu vaccine in 200 adults aged 65 and older who have chronic medical conditions like diabetes or heart disease. Researchers will measure immune response and safety over one year. The goal is to see if the adjuv…

This study looks at how well the shingles vaccine Shingrix works in people who have had a stem cell transplant. About 55 adults who received the vaccine at least a year after their transplant will have their immune responses measured. Researchers want to see if the timing of the …

This study looks at whether giving two doses of the HPV vaccine instead of three can protect women living with HIV just as well. Researchers will compare immune responses in 275 Canadian women aged 18-45 who have not been vaccinated before. If two doses work, it could make HPV va…

This study tests a new COVID-19 vaccine that you breathe in as a mist, instead of getting a shot. It aims to see if it is safe and creates a strong immune response in the lungs and blood. About 350 healthy adults who have already had three mRNA COVID vaccines will receive either …

This study tests whether the antiviral drug molnupiravir can prevent severe illness from COVID-19 in adults at high risk. About 3,000 non-hospitalized participants will take either molnupiravir or a placebo for 5 days. The main goal is to see if the drug reduces hospitalizations,…

This study tests a drug called felzartamab in people who received a kidney transplant and later developed microvascular inflammation (MVI), a type of injury to small blood vessels in the new kidney that can lead to serious problems. The trial includes 81 participants who will rec…

This study tests whether a combination of three drugs (cyclophosphamide, bortezomib, and maraviroc) can safely prevent graft-versus-host disease after a half-matched bone marrow transplant in people living with HIV who also have a blood cancer. The trial involves 265 participants…

Researchers are testing whether regulatory T cells taken from donated thymus tissue can control the dangerous immune overreaction that occurs in severe COVID-19 and acute respiratory distress syndrome (ARDS). The trial enrolls adults aged 18 to 65 who are hospitalized with acute …

This study will test a two-drug HIV pill (Dolutegravir/Lamivudine) in 210 pregnant women who have never taken HIV medication. The goal is to see if it controls the virus and prevents passing HIV to their babies. Participants will be compared to those on standard three-drug therap…

This study tests whether a program that helps incarcerated men with HIV notify their sex and drug-use partners about possible HIV exposure can increase testing and treatment. Participants can choose to tell partners themselves or have a trained notifier do it anonymously. The goa…

This phase 3 trial is testing whether the oral antiviral secutrelvir can prevent severe COVID-19 in people who are at high risk for complications. Participants with mild symptoms and confirmed SARS-CoV-2 infection will receive either secutrelvir or a placebo. The study will measu…

This phase 1 study tests a combination of two drugs, pomalidomide (a pill) and nivolumab (an infusion), in adults with cancers caused by viruses like Epstein-Barr, HPV, or hepatitis. The goal is to find a safe dose and see if the drugs can shrink tumors. Up to 58 people with Kapo…

Researchers are testing venetoclax, a drug that prompts certain cells to self-destruct, in people living with HIV who take antiretroviral therapy. The goal is to see if it can safely reduce the size of the latent HIV reservoir, the hidden pool of virus that persists despite treat…

This phase 2 trial tests whether the drug nivolumab can slow or stop the growth of Epstein-Barr virus (EBV)-positive lymphoproliferative disorders and non-Hodgkin lymphomas. About 40 people aged 12 and older whose cancers have not responded to standard therapy will receive nivolu…

This study tests whether giving newborns plasma from people who recently recovered from chikungunya can prevent brain swelling or damage. The trial will include 60 newborns whose mothers were infected around the time of birth. Half will receive the plasma transfusion, and their o…

This Phase 2 trial tests an experimental drug called EYU688 in 108 adults with dengue fever. Participants receive either the drug or a placebo to see if it lowers the amount of virus in the blood and shortens fever. The study is currently recruiting.

Researchers are testing whether an experimental drug called resomelagon can safely treat adults with dengue fever. The trial enrolls 120 adults who have had dengue symptoms for less than three and a half days. Participants receive either resomelagon or a placebo, along with stand…

This study tests a new combination of medicines (BPaLMZ) against the standard treatment for tuberculous meningitis, a serious brain infection. About 240 adults, including those living with HIV, will take part. The goal is to see if the new combo helps more people survive and reco…

This study is testing the drug letermovir to prevent cytomegalovirus (CMV) infection in children and teens who have had a kidney transplant and weigh less than 40 kg. About 40 participants will receive the drug to see how it moves through their bodies and if it is safe. The goal …

This study is for people with HPV-related throat cancer who have surgery to remove the tumor. Normally, some patients also get radiation afterward to lower the risk of cancer coming back. This trial tests whether it's safe to skip that radiation if a blood test two weeks after su…

Researchers are testing whether a higher daily dose of the antiviral drug entecavir suppresses hepatitis B virus better than the standard lower dose in adults whose livers are already scarred and failing. The trial enrolls 48 people with hepatitis B and decompensated cirrhosis. P…

This study tests whether adding immune cells from a family donor to standard antiviral drugs can help children and young adults clear stubborn adenovirus or cytomegalovirus infections after a stem cell transplant. About 69 participants will be randomly assigned to receive either …

This study tests whether a two-drug HIV regimen (dolutegravir plus lamivudine) works as well as the standard three-drug regimen in people who also have tuberculosis and are on TB treatment. About 150 participants who have never taken HIV medication will be randomly assigned to on…

This Phase 2 trial tests an experimental drug called AHB-137 in 84 adults with chronic hepatitis B who are already on antiviral therapy. The goal is to see if AHB-137 can clear the hepatitis B surface antigen and keep the virus under control, potentially leading to a functional c…

This study tests whether switching from the current drug bulevirtide to a new drug called brelovitug can better control chronic hepatitis Delta. About 120 adults who have been on bulevirtide for at least 6 months will take brelovitug for 24 weeks. The main goal is to see if the v…

This study tests whether starting antiretroviral therapy within 7 days of an HIV diagnosis can reduce stigma and improve health outcomes for people who inject drugs. Researchers will develop a rapid-start strategy and pilot it with 135 participants at HIV clinics. The goal is to …

Researchers in Peru are studying whether moving HIV care from specialized hospitals to primary health clinics helps more people stay in treatment and keep the virus suppressed. The trial combines two training programs, NIATx and Project ECHO, to give primary care staff the skills…

This phase 2 trial tests whether applying a special gel (Geniwa gel) after laser removal can better treat recurrent genital warts and prevent them from returning. Adults who have had at least three laser treatments and still experience recurrences are eligible. Participants recei…

This study tests whether giving very early and intensive antiretroviral therapy, plus an antibody, can help infants with HIV achieve remission—meaning the virus stays undetectable even after stopping treatment. Researchers will enroll about 1,120 infants and follow them for safet…

This study looks at whether people with HIV who need a liver transplant can safely receive a liver from a donor who also had HIV. Researchers will compare infections and cancer rates between those who get an HIV-positive donor liver and those who get an HIV-negative donor liver. …

This study tests whether an injectable combination of two experimental drugs, GS-3242 and lenacapavir, can control HIV-1 as well as the daily pill Biktarvy. About 700 people with HIV who have never taken antiviral treatment will receive either the injectable regimen or the standa…

This study tests whether a once-weekly combination of two experimental drugs (islatravir and ulonivirine) works as well as the standard daily three-drug pill Biktarvy for people newly diagnosed with HIV-1. About 570 adults who have never taken HIV medication will be randomly assi…

This study offers continued access to HIV medications for children and adolescents who completed a previous Gilead HIV treatment study. About 350 participants will receive their study drug or switch to a standard HIV medication, and researchers will monitor for side effects. The …

This study looks at a newly recognized disease called KSHV Inflammatory Cytokine Syndrome (KICS), caused by a virus that can also lead to certain cancers. Researchers aim to learn more about the disease and test experimental treatments, including antiviral and chemotherapy drugs,…

This study tests whether the drug emetine can help people hospitalized with dengue fever. About 600 adults aged 18 to 65 will take either a low or high dose of emetine or a placebo pill for 7 days. Researchers will track if the drug reduces deaths or stops the disease from becomi…

This study looks at whether SGLT2 inhibitors, a class of diabetes and kidney drugs, can improve blood flow through the heart's small arteries in women with HIV who also have diabetes or chronic kidney disease. Eighty women aged 45-75 will be randomly assigned to health education …

This study tests whether specially grown donor immune cells (called cytotoxic T lymphocytes) can safely and effectively control BK and JC virus infections in people with weakened immune systems, such as those with cancer, HIV, or organ transplants. About 100 participants will rec…

This study tests whether specially grown donor immune cells (viral-specific T-cells) can safely treat viral infections that often occur after a stem cell transplant. These infections can be serious and sometimes don't respond to standard antiviral drugs. The approach aims to boos…

This early-stage trial tests whether a specially engineered herpes virus (G207) is safe to inject directly into the brain tumors of children whose cancer has returned. Up to 24 children aged 3 to 21 will receive the virus, and some will also get a small dose of radiation to help …

This phase 2 trial tests a new combination of an anti-PD-1 antibody (a type of immunotherapy) plus standard antiviral drugs in 120 adults with chronic hepatitis B. The goal is to achieve a functional cure, where the virus is no longer active and patients can stop medication. The …

This study looks at the best time to give hepatitis C medication to people without HCV who receive a kidney from an HCV-positive donor. One group starts the drug just before transplant and takes it for only 2 weeks; the other starts after transplant and takes it for 12 weeks. The…

This early-stage trial tests whether specially grown donor T cells can safely treat adenovirus infections in people with weakened immune systems, such as cancer patients. The cells are designed to target and kill the virus. The study will check for side effects and see if the inf…

This Phase 2 trial tests whether switching to a combination of two injectable drugs, GS-3242 and lenacapavir, works as well as staying on the daily pill Biktarvy for people with HIV who already have the virus under control. About 175 participants will be randomly assigned to eith…

This phase 2 trial tests a combination of an anti-PD-1 antibody, interferon, and standard antiviral drugs in 120 adults with chronic hepatitis B. The goal is to boost the immune system to clear the virus and achieve a functional cure, where the virus stays under control without l…

This early-stage study tests whether giving two powerful antibodies along with a therapeutic HIV vaccine can help people with HIV control the virus after they stop their daily antiretroviral therapy. The trial enrolls 48 adults in Thailand who started HIV treatment very soon afte…

This study tests whether specially grown immune cells from an unrelated donor can safely treat viral infections in people with weakened immune systems, such as after a stem cell transplant. About 750 participants will receive these cells and be monitored for side effects like inf…

This study tests whether giving patients donor-derived immune cells (VSTs) on a regular schedule can prevent dangerous viral infections after a stem cell transplant. 180 participants will be randomly assigned to receive VSTs either on a fixed schedule or only when a virus is dete…

This Phase 3 trial tests YCANTH, a topical solution containing cantharidin (a substance from blister beetles), against a placebo for treating common warts. About 300 people aged 2 and older with at least one wart on their body (excluding certain areas) will receive either the act…

This study looks at whether people with HIV who have stopped their medication for at least 12 weeks can safely restart treatment with a single daily pill (B/F/TAF) on the same day they return to care. About 200 adults will take part to see if this quick restart helps lower the vi…

This trial tests a two-part approach for viral warts: applying mild heat at 44°C to the largest wart and using a 3% hydrogen peroxide solution on all warts. The idea is that heating one lesion may rally the immune system to fight the virus elsewhere, while the peroxide works dire…

This phase 3 trial is testing whether the oral drug secutrelvir can help people with COVID-19 recover faster. The study involves about 1,200 nonhospitalized participants aged 12 to 75 who start treatment within 48 hours of symptom onset. Half will receive secutrelvir and half a p…

This early-phase trial is testing an oral drug called VK-2019 in 30 adults with a type of lymphoma (DLBCL) that is linked to the Epstein-Barr virus and has not responded to at least two prior treatments. Participants take the drug daily in 28-day cycles at one of three dose level…

This phase 3 trial tests tabelecleucel, a cell therapy made from donor immune cells, in 115 organ or stem cell transplant patients who developed a rare cancer (EBV+ PTLD) after standard treatment failed. The goal is to see if it can shrink tumors and improve outcomes. Participant…

This early-stage trial is testing whether lab-made antibodies that target HIV are safe and how long they stay in the body. About 83 healthy adults without HIV will receive the antibodies by vein or under the skin, alone or in combination. The goal is to find the right dose and ch…

This early-stage study tests a new antibody called BNT351 in 67 adults, both with and without HIV. The goal is to check safety, how long the antibody stays in the blood, and whether it can lower HIV levels in people with the virus. It is a first step toward possibly controlling H…

This early-stage trial is testing an experimental drug called GS-0415 in people with HIV who already have the virus well-controlled by standard antiretroviral therapy. The study will give single and multiple doses of GS-0415 to evaluate its safety, tolerability, and how the body …

This trial compares two antiviral drugs, tenofovir alafenamide (TAF) and tenofovir disoproxil fumarate (TDF), in pregnant women with high hepatitis B virus levels. The goal is to see if TAF can prevent passing the virus to the baby as effectively as TDF, but with fewer side effec…

This trial tests whether two experimental capsules, 2LEBV and 2LXFS, can reduce fatigue and other symptoms in people with an Epstein-Barr virus infection. Participants take one capsule daily for six months, either one of the study drugs or a placebo. The study measures changes in…

This trial tests whether a daily oral capsule called 2LVERU can clear common, flat, or plantar warts caused by HPV. Researchers compare the capsule against a placebo in 162 people aged 3 and older over 6 months. The main question is whether warts disappear completely by the end o…

This study in El Salvador tests a new thermal ablation device (IRIS™) to treat cervical precancer and an AI algorithm to help decide who needs treatment. About 5,000 HPV-positive women aged 30-49 will receive the treatment and be followed for one year to see if the precancer is c…

This trial tests whether 2LHERP, an immune regulator available for over 20 years, can reduce the number of cold sore outbreaks in adults who get at least six per year. Participants take one capsule daily for six months, then researchers compare outbreak rates over a year against …

This trial tests whether 2LPAPI, an immune regulator used for over 20 years, can help clear high-risk genital HPV infections faster than a placebo. Researchers will enroll 284 women aged 25 to 45 with a current high-risk HPV diagnosis. Participants receive either 2LPAPI or a plac…

This trial tests whether a daily probiotic pill can improve gut health and lower heart disease risk in 250 people living with HIV who drink heavily. Heavy drinking changes gut bacteria, which may raise inflammation and heart disease risk. Researchers will measure changes in gut b…

This phase 2 trial tests an experimental drug called AHB-137 in 70 adults with chronic hepatitis B who are already on antiviral pills. The drug is given as a shot under the skin. The goal is to see if it can lower the virus to undetectable levels and allow some people to stop the…

This phase III trial compares a new, shorter radiation approach to the standard 7-week chemoradiation for patients with HPV-positive oropharynx cancer. The experimental treatment uses a precise, high-dose radiation boost to the tumor followed by a reduced-dose chemoradiation cour…

This pilot study tests whether methylene blue, a compound with antiviral properties in lab tests, can reduce hepatitis B virus levels in people with chronic infection. Participants take methylene blue capsules for up to 6 months, with the dose possibly increasing if the initial d…

This study investigates whether a mobile app called reSET can help men who have sex with men, are living with HIV, and have a stimulant use disorder reduce their drug use and keep their HIV under control. Participants use the app for 12 weeks, completing modules on topics like ma…

This trial tests whether treating hepatitis C in primary care clinics, with non-specialist doctors, works as well as the standard specialist care in Brazil. It also evaluates the use of rapid tests and self-testing to find more people with the infection. The goal is to see if a s…

This study offers continued access to HIV medications (fostemsavir or dolutegravir/lamivudine) for 183 people who completed earlier ViiV Healthcare studies and are still benefiting. The goal is to provide treatment while collecting more safety information. Participants must have …

This Phase 3 trial tests whether an immunotherapy-based regimen (sintilimab, pegaspargase, and anlotinib) works better than standard chemotherapy before a stem cell transplant in people with newly diagnosed, advanced extranodal NK/T-cell lymphoma. Participants are randomly assign…

This trial tests an experimental drug called STAR0602, which is designed to help the immune system attack cancer cells. It is being studied in people with advanced solid tumors that have not responded to standard treatments. The drug is given alone or combined with chemotherapy, …

This study tests an enhanced Mentor Mother strategy, where trained peer counselors provide tailored support to pregnant and postpartum women living with HIV. The goal is to see if this approach can be successfully implemented and improve health outcomes, such as keeping mothers i…

This study tests a new drug, brincidofovir, against the current treatment cidofovir for adenovirus infection in children and adults who have had a stem cell transplant. About 180 participants will receive one of the two drugs intravenously until the virus is cleared or up to 12 w…

This trial tests whether two antiviral drugs, favipiravir and ribavirin, can help clear the virus faster in adults hospitalized with Crimean-Congo hemorrhagic fever (CCHF), a severe tick-borne infection. Participants will receive one of the drugs or optimized standard care, and r…

This study tests three approaches to help older adults with HIV become more physically active: one-on-one coaching, cognitive behavioral therapy to overcome barriers like low motivation or pain, and a Fitbit-based social support program. About 196 participants will wear a Fitbit …

This study tests an experimental drug called JL18008 in people with HIV whose immune systems have not fully recovered despite standard antiretroviral therapy. The goal is to see if adding this drug can safely increase CD4+ T cells, which are crucial for fighting infections. The t…

This study tests a drug called foscenvivint in people with liver cirrhosis caused by HIV and hepatitis C co-infection who also have hemophilia. Participants receive the drug once a week for 24 weeks. Researchers will check if the drug improves liver function and is safe to use.

This trial tests whether a 12-week smell training program can help people who lost their sense of smell after COVID-19. Participants will sniff four different scents twice daily, with one group using rose, orange, clove, and eucalyptus, and another using cheese, coffee, strawberr…

This trial tests whether combining community health worker support with a smart pill bottle that tracks medication and sends reminders can improve HIV treatment adherence and viral suppression. The study enrolls 420 adults with HIV in Alabama, Louisiana, and Mississippi who have …

This pilot trial tests whether intravenous zanamivir, a drug already used for flu, can reduce vascular permeability — the dangerous blood vessel leakage that is the main cause of death in dengue fever. About 74 people with dengue and warning signs will receive either zanamivir or…

This study tests whether a daily pill called AP1189 can help hospitalized patients with breathing failure due to viruses like flu, RSV, or COVID-19. About 96 adults will receive either AP1189 or a placebo for 14 days, on top of usual care. The main goal is to see if the drug redu…

This trial investigates whether long-acting injectable antiretroviral drugs can control HIV better than standard oral pills in adults with AIDS-related lymphoma who are also receiving chemotherapy. Participants will receive one of three HIV treatment strategies—oral pills alone, …

This study tests whether giving people with HIV or those taking PrEP two dedicated case managers helps them achieve better financial stability, food security, and health outcomes. Participants will work with their case managers to set goals and stay connected to care. The trial c…

This trial tests whether a low-cost, point-of-care urine test can help people with HIV who are not virally suppressed stick to their antiretroviral therapy. Participants provide a urine sample that is immediately tested for the presence of the drug tenofovir. Based on the result,…

This trial tests whether colchicine, an anti-inflammatory drug used for gout, can reduce inflammation in the coronary arteries of people with HIV who have high cardiovascular risk. Participants take either colchicine or a placebo daily for 96 weeks, and changes in artery inflamma…

This study tests a mutual-help group called the TLC Program for transgender adults who struggle with substance use or are recently in recovery. The program uses mindfulness and values-based skills from Acceptance and Commitment Therapy to improve mental health and reduce HIV risk…

This study tests an experimental therapy called YH02, a genetically modified virus designed to infect and destroy cancer cells. It is given as an injection directly into tumors in people with advanced solid tumors (such as head and neck cancer, breast cancer, or melanoma) that ha…

This study tests a smartphone app called ESCAPE, designed specifically for Black adults with HIV who smoke. The app teaches ways to handle stress, anxiety, and nicotine cravings, and is paired with nicotine patches or gum. 300 participants across the US will be randomly assigned …

This study tests whether a software program called PEPPI makes it easier for pharmacists to offer HIV prevention pills (PEP and PrEP) and for patients to get them. Pharmacists and patients use the software during their normal visits, and researchers compare how well the service w…

This trial tests whether a two-drug combination (darunavir/cobicistat plus lamivudine) works as well as a standard three-drug combination (darunavir/cobicistat plus tenofovir alafenamide/emtricitabine) in people with HIV whose virus is already suppressed. The study involves 78 ad…

This study tests a program to help women living with HIV in Ghana get screened for cervical cancer more easily. The program includes self-sampling kits, patient navigators, and training for healthcare providers. Researchers want to see if these tools increase screening rates and …

This trial tests whether giving the antiviral drug tenofovir disoproxil fumarate (TDF) to pregnant women with active hepatitis B can prevent the virus from spreading to their babies. The women take TDF from the 28th week of pregnancy until six weeks after giving birth, and all ne…

This study tests whether community health workers (CHWs) can help Black people with poorly controlled HIV achieve long-term viral suppression. CHWs provide support through weekly phone calls, home visits, and clinic accompaniment for three months. The study enrolls 10 Black adult…

This study tests whether giving patients special donor immune cells (called CD45RA-depleted DLI) can treat viral infections that persist after a stem cell transplant. The trial involves 30 participants who have not improved with standard antiviral drugs. Researchers will measure …

This early-phase study tests whether specially trained immune cells from healthy donors can safely treat viral infections (EBV, CMV, adenovirus, BK virus) in patients who have had a stem cell transplant or certain CAR-T therapy. These infections can be life-threatening when the i…

This study tests a therapeutic vaccine called TherVacB in 81 adults with chronic hepatitis B who are already on antiviral medication. The vaccine is given as a series of shots to boost the immune system and lower hepatitis B virus levels. The main goals are to check safety and se…

This study looks at how well a long-acting injectable HIV treatment works in people with HIV-1 subtype A6, a common type in Eastern Europe. Researchers will compare medical records from 250 adults in Poland, Germany, and the Czech Republic who have already received the shots. The…

This study tests two smoking cessation methods—varenicline pills and nicotine patches with gum—in 660 people with HIV in South Africa. Participants will receive one of these treatments for 12 weeks, along with counseling. The goal is to see which approach works best to help them …

This study tests a daily combination pill (TLD) as first-line HIV treatment for 100 people who became infected with HIV despite receiving long-acting cabotegravir PrEP in the past year. Researchers will check if the pill can suppress the virus to undetectable levels after 6 month…

This study tests whether reducing anti-rejection drugs, with or without an extra treatment called IVIG, can better control BK virus in kidney transplant patients. BK virus can damage the new kidney and lead to transplant failure. About 280 adults and children who have a kidney or…

This study tests whether specially grown immune cells (called cytotoxic T lymphocytes) can safely lower BK virus levels in 20 transplant patients with weakened immune systems. Participants have had a stem cell or kidney transplant and show signs of BK virus infection. The goal is…

This study looks at how obesity affects recovery from post-COVID conditions in older Veterans. Researchers will test if a weight loss program with diet and exercise can reduce inflammation and improve physical function and quality of life. The study involves 150 Veterans, some wi…

This Phase 2 trial compares the drug dolutegravir alone versus dolutegravir combined with tenofovir in 146 adults with HTLV-1 infection and related symptoms. The main goal is to see if the combination lowers the virus level more effectively and improves pain, spasticity, and musc…

This study tests four approaches to help adults with drug-resistant tuberculosis and HIV stick to their treatments. Participants receive either standard care, counseling, phone reminders via a special pill bottle, or both counseling and reminders. The goal is to see which method …

This phase 2 trial tests whether adding tesamorelin (a growth-hormone-releasing hormone analogue) to a home-based exercise program can improve physical function in 100 adults aged 50-80 with HIV. Participants are randomly assigned to receive tesamorelin or a placebo injection dai…

This study tests whether a special placental graft, used alongside standard wound care, helps close diabetic foot ulcers that won't heal on their own. About 350 adults with type 1 or 2 diabetes and a foot ulcer between 1 and 15 cm² will be randomly assigned to get the graft plus …

This study tests whether a mobile app with a virtual group support feature can help young Black women (ages 18-30) who misuse alcohol reduce their drinking and risky sexual behavior, and increase their use of PrEP (a daily pill that prevents HIV). About 500 HIV-negative women in …

This study tests a program called PrTNER that helps young people aged 15-29 who are at risk for HIV or already living with it, and who also have substance use issues. The program provides prevention, treatment, and support to help them start HIV prevention medication (PrEP) or lo…

This project aims to make hepatitis C testing and treatment easier for people who visit drug treatment clinics and needle exchange programs. Researchers will work with clinics across New South Wales, Australia, to help more people start treatment. The study includes up to 6,000 a…

This study tests whether a mobile app called HBVCare can help people with chronic hepatitis B take their medication regularly and attend follow-up visits. About 70 adults in Vietnam will either use the app or receive standard care. After 3 months, researchers will compare how wel…

This early-stage trial is testing whether injecting the local anesthetic lidocaine into HPV-related throat tumors before robotic surgery is safe and might help destroy more cancer cells. About 30 adults with HPV-positive oropharyngeal cancer will receive the injection during a ro…

This study tests a program called Kisoboka for men living with HIV who drink heavily in fishing communities. The goal is to help them drink less, take their HIV medication as prescribed, and achieve undetectable viral loads. About 716 men will be randomly assigned to different co…

This early-stage trial tests whether venetoclax, a drug used for certain blood cancers, can help eliminate the hidden HIV reservoir. The study enrolls 38 adults newly starting HIV therapy. Participants receive venetoclax in three short cycles while researchers monitor safety and …

This study follows people who already took part in earlier YCANTH wart studies. It tests whether up to 4 more treatments, applied every 21 days, can safely clear common warts. About 600 adults and children will be monitored for a year. The goal is to see if the medicine continues…

This study tests a program led by trained peers (other women with HIV) that combines acceptance and commitment therapy, exercise, and social support. The goal is to help 300 women in four counties stick to their HIV medication and manage substance use and trauma. Researchers will…

This phase 2 trial is testing two antivirals—molnupiravir (used for COVID-19) and a lab-made antibody called VIS513—in 500 people with early dengue. Participants must have had fever for less than 48 hours and a positive rapid test. The goal is to see if these drugs can clear the …

This study tests whether adding one dose of a stronger antifungal drug (liposomal amphotericin) to the standard treatment (fluconazole) can prevent cryptococcal meningitis in HIV-positive adults who test positive for the fungus but have no symptoms. About 356 participants in Ugan…

This study tests whether semaglutide (Ozempic) helps people with HIV and obesity lose more weight than diet and exercise alone. About 80 participants will receive either semaglutide injections or standard lifestyle advice for 28 weeks. Researchers will also check how the drug aff…

This large Phase 3 trial is testing many different treatments, including antiviral drugs and steroids, in 70,000 hospitalized patients with pneumonia (including COVID-19). The goal is to see which treatments reduce deaths and speed up recovery. Researchers compare each treatment …

This study tests whether metformin, a common diabetes drug, can reduce harmful inflammation and improve immune function in 100 adults aged 18-64 who have a history of injection drug use, some of whom also have HIV. Participants take metformin or a placebo for 16 weeks and receive…

This study is testing whether people with early-stage HPV-positive throat cancer can be treated with radiation alone at a lower dose, instead of the usual full-dose radiation plus chemotherapy. The goal is to see if this gentler approach can keep the cancer from coming back while…

This study tests whether high-dose zinc supplements can improve immune function in people with HIV who still have low CD4 counts despite successful antiretroviral therapy. 120 participants will receive either zinc or a placebo for 16 weeks. Researchers will measure changes in CD4…

This study tests the drug nivolumab in people with advanced rare cancers that have a specific marker (PD-L1). The goal is to see if the drug can shrink or control the tumors when other treatments have stopped working. Up to 28 adults will receive treatment for up to 12 months, an…

This study tests whether giving arginine (a natural protein) by IV can improve how cells produce energy in children hospitalized with COVID-19. About 21 kids aged 3 to 21 will receive one of three doses three times a day for up to five days. Researchers will measure changes in mi…

This study tests two programs to help young people aged 15-24 in Nigeria. One program focuses on finding undiagnosed HIV cases using mobile health tools and peer support. The other helps those already diagnosed stick to their HIV medication to achieve viral suppression. The goal …

This study tests whether getting a flu vaccine soon after a heart attack can reduce inflammation in the heart's arteries. Researchers will compare the vaccine to a placebo in 90 adults who recently had a heart attack and a stent procedure. They will use special CT scans and blood…

This study in South Africa tests whether peer support and long-acting injectable HIV medication help teens (ages 12-19) stay virally suppressed and keep up with care. 720 teens living with HIV will take part. The goal is to see if these approaches improve health and retention ove…

This study aims to help people with HIV stay in care, especially during the first six months of treatment when the risk of dropping out is highest. Researchers will create and test a toolkit that includes risk assessments, a treatment roadmap, and a WhatsApp support coach. The st…

This study tests whether the drug letermovir can stop cytomegalovirus (CMV) in unborn babies better than the current treatment valaciclovir. Pregnant women with a CMV-infected fetus will take one of the two drugs daily until delivery. The goal is to see if letermovir leads to a n…

This study is testing whether the Gardasil 9 vaccine can reduce the infectivity of HPV16 virus in women who already have the infection. About 50 women aged 18-45 will receive two doses of the vaccine, and researchers will use urine samples to measure virus activity and immune res…

This study tests a new way to help doctors in Mozambique and Zambia decide if a sick child has tuberculosis (TB). The approach uses simple checklists and decision guides, supported by a computer system, to improve diagnosis and treatment, especially for children with HIV or sever…

This study tests whether a daily nutritional supplement containing resveratrol, quercetin, taurine, inulin, and whey protein can improve liver function and quality of life in adults with liver disease from chronic hepatitis C. Over 12 weeks, 26 participants will take either the s…

This study tests different approaches to help people with HIV whose current medication (tenofovir, lamivudine, and dolutegravir, or TLD) is no longer working. It involves 648 adults and teens in Uganda and South Africa. The goal is to find the best strategy to get the virus under…

This early-stage trial tests whether a patient's own immune cells, modified to target HIV (called CAR-T cells), can help control the virus without daily medication. Only 3 people with well-controlled HIV will receive the treatment. The main goal is to check safety, but researcher…

This study looks at whether giving the 9vHPV (Gardasil-9) vaccine to women who already have HPV16 or 18 can reduce the virus's ability to infect others. Researchers will measure viral activity in cervical, anal, and oral samples before and after vaccination. The goal is to see if…

This study looks at whether giving a longer course (10 days instead of 5) or adding another antiviral (remdesivir) to the standard Paxlovid treatment helps immunocompromised people clear COVID-19 faster. About 256 adults with mild or no symptoms will be randomly assigned to diffe…

This study tests a short, computer-based program to help people with HIV and alcohol use disorder avoid returning to heavy drinking. About 150 adults from a Johns Hopkins HIV clinic will take part. The goal is to see if the program helps them stay alcohol-free longer and drink le…

This study looks at how the HIV drug doravirine works in pregnant women. Researchers want to find the right dose to keep the virus under control and protect the baby. About 76 pregnant women with HIV will take either doravirine or standard HIV medication starting in the second tr…

This study compares two ways to prevent cytomegalovirus (CMV) infection in kidney transplant patients who already carry the virus. One approach gives antiviral drugs to everyone for 3 months, while the other uses immune system tests to decide who needs treatment. The goal is to s…

This study tests whether using drones to deliver HIV medication to people living in remote islands of Uganda can improve viral suppression. Over 1,000 participants will either get their medication via drone or through standard methods. Researchers will compare viral load and rete…

This study is testing whether giving a longer course of the antiviral Paxlovid (10 days instead of 5) or combining it with another antiviral (remdesivir) helps immunocompromised people clear COVID-19 faster. About 256 participants with mild to moderate COVID-19 and weakened immun…

This study tests a system that uses a special pill bottle to track when HIV medication is taken. If doses are missed, the system alerts a care team to help address problems like food or housing issues. The goal is to help 110 adults in Los Angeles stick to their HIV treatment and…

This study tests whether special wraps made from human placental membrane can help heal diabetic foot ulcers and venous leg ulcers that won't close on their own. About 50 adults with diabetes or venous disease will receive weekly applications of one of four placental membrane pro…

This study tests a program called SAVVY that helps young people with HIV choose their preferred antiretroviral therapy (ART) and overcome barriers to getting it. The program includes counseling and a decision-support tool. Researchers will enroll 288 participants to see if this a…

This early-stage trial tests whether specially grown immune cells (norovirus-specific T-cells) can safely treat chronic norovirus infections in people with weakened immune systems, such as those who had a stem cell or organ transplant. The study will enroll 48 participants and gi…

This study tests a new technology called Pictura Bio that aims to detect respiratory viruses quickly and cheaply from nose or throat swabs. Researchers will collect samples from 1000 adults and children with suspected viral infections at a UK hospital. The data will be used to tr…

This study evaluates a new digital test that people can use at home to detect COVID-19 and influenza A and B from a nasal swab. Participants with symptoms will use the test themselves and compare the results to a standard lab PCR test. The goal is to see if the test is accurate e…

Researchers test whether giving people education materials and free access to screening helps them get checked for colorectal cancer and hepatitis C. The trial enrolls adults ages 45 to 75 who receive care at community health centers and are not up to date on these screenings. Pa…

Researchers are studying whether a digital management platform can help diagnose liver cancer at an earlier stage in people with chronic liver disease. The study enrolls adults aged 18 to 75 with conditions such as chronic hepatitis B. The platform tracks patients and guides stan…

This study aims to build a massive screening cohort of one million people to improve early detection of nasopharyngeal carcinoma, a cancer linked to Epstein-Barr virus (EBV). Participants aged 30 to 69 will provide blood, saliva, and nasal brush samples for EBV antibody and DNA t…

This trial evaluates whether a new self-collection device, Mia by XytoTest, can be used effectively by people to collect their own vaginal samples for cervical cancer screening. The study compares the accuracy of these self-collected samples against clinician-collected samples fo…

This study evaluates whether a blood test measuring polyreactive immunoglobulin G (pIgG) can more accurately diagnose autoimmune hepatitis (AIH) and distinguish it from other liver conditions. Researchers will collect blood samples from 400 adults undergoing liver biopsy for susp…

This study collects blood samples from healthy people, those with benign diseases, and cancer patients to develop a multi-analyte blood test. The test looks for DNA methylation markers that may indicate the presence of various cancers, especially liver cancer. Researchers aim to …

This study aims to create and test a clinical prediction score called FUNGAL-P to help doctors identify fungal pneumonia early in adults who come to the hospital with pneumonia. Researchers will analyze medical records from past patients and then test the score on new patients to…

This study looks at 200 adults with inflammatory bowel disease (IBD) who are hospitalized due to worsening symptoms. Researchers want to see if testing blood or stool for CMV (a common virus) is as accurate as the standard method of testing a tissue sample from the colon. The goa…

This study compares two ways to offer cervical cancer screening to women living with HIV: standard clinic-based screening versus adding community outreach where health workers provide HPV self-collection kits at home or in community settings. About 7,600 women across multiple cli…

This study is testing a new, portable breath test called eBAM-CoV to see if it can detect COVID-19 as accurately as the standard nasal swab test (RT-PCR). The breath test is less invasive and gives immediate results. Researchers will compare the two tests in 250 adults who have s…

This study is testing whether measuring a natural immune marker called IFN-I in nasal swabs can help detect respiratory viral infections in older adults. Current PCR tests only look for a few viruses and can miss others or show old infections. The goal is to improve diagnosis, es…

This study is testing whether giving women a simple self-sampling kit to use at home can increase the number of women who get screened for cervical cancer. The trial will enroll 15,000 women in Czech Republic, especially those who haven't had a Pap smear in over 3 years. Particip…

This study aims to see if a dried blood spot test can effectively screen drug users for hepatitis B, hepatitis C, and AIDS. Researchers will enroll 500 former or active drug users. The goal is to find a simpler way to detect these infections in a hard-to-reach population.

This study is testing whether a blood test called Karius Spectrum can help doctors find infections faster in adults with weakened immune systems (e.g., organ transplant recipients, cancer patients). The test looks for DNA from bacteria, fungi, viruses, and parasites in the blood.…

This study tests whether a DNA sequencing test can help doctors choose the right antibiotics for people with drug-resistant tuberculosis (TB). Researchers will collect samples from 2,500 participants in clinics and use targeted sequencing to identify which drugs the TB bacteria a…

This study is testing a new approach called PAC-Man to help prevent HIV from passing from mothers to their babies. About 2,426 mothers and infants in Malawi will take part. The goal is to see if this model helps more babies get tested for HIV early and ensures mothers receive pro…

This study in Uganda tests whether adding lab tests for common sexually transmitted infections (STIs) to standard HIV risk screening helps more women start and stick with PrEP, a daily pill that prevents HIV. About 4,500 HIV-negative women aged 15-39 will be randomly assigned to …

This phase 3 trial tests MK-8527, a once-monthly oral pill, to prevent HIV-1 infection in women. About 4580 HIV-negative women will take either MK-8527 monthly or a daily PrEP pill (Truvada) to see which works better and is safer. The goal is to offer a more convenient prevention…

Researchers are testing whether a three-session couples motivational interviewing program helps male couples reduce illicit drug use and behaviors that raise HIV transmission risk. The trial enrolls 360 male couples where at least one partner is HIV negative and at least one has …

Researchers are testing a clear plastic dome placed over a patient's head during surgery to see if it can stop the spread of airborne germs in hospitals. The trial enrolls 80 adults having elective surgery that requires a breathing tube. Participants are randomly assigned to have…

This study looks at how well people stick to a new HIV prevention shot called lenacapavir. About 3,000 people in the U.S. who want or need HIV prevention will take part. Researchers will track who stays on the shot and how it works in everyday clinic settings.

Women treated for vulvar high-grade squamous intraepithelial lesion (vHSIL), a precancerous condition linked to HPV, often see it return. This trial tests whether giving the Gardasil 9 HPV vaccine alongside standard treatment (surgery, laser, or imiquimod) can lower that recurren…

This study compares the immune response from 2 doses versus the standard 3 doses of the HPV vaccine in women aged 27-45. About 618 participants will be randomly assigned to receive either 2 or 3 doses, and their antibody levels will be checked over 12 months. If 2 doses prove non…

Researchers are studying how well two chikungunya vaccines, IXCHIQ and VIMKUNYA, prevent infection in adults during outbreaks on Réunion Island and in French Guiana. The study includes about 1,505 adults who are eligible for vaccination. By comparing infection rates between vacci…

This early-stage study tests a vaginal gel containing specially modified bacteria that produce an anti-HIV drug. The goal is to see if it is safe for healthy women and whether it can be cleared with antibiotics. If successful, this could become a long-lasting, woman-controlled HI…

This trial tests a police education program called SHIELD 2.0 in nine counties in Appalachian Kentucky. The program trains local behavioral health workers to teach police how to refer people who use drugs to treatment and social services instead of arresting them for low-level po…

This study tests an investigational nasal spray called INNA-051 to see if it can safely prevent or reduce the severity of viral respiratory infections like colds and flu. It involves 1100 healthy adults aged 18 to 45 who are at higher risk due to their living or work conditions. …

Researchers at Yale University are studying how to expand opioid agonist therapy (OAT) in prisons and probation systems in Tajikistan, Kyrgyzstan, Moldova, and Georgia. OAT uses medicines like methadone or buprenorphine to treat opioid dependence and can lower HIV transmission am…

This study tests a program called TENDAI4PrEP, which uses problem-solving techniques to help pregnant women in Zimbabwe take PrEP, a daily pill that prevents HIV. The program also involves their partners and healthcare providers. Researchers will enroll 132 HIV-negative pregnant …

This early-stage study is testing an experimental antibody called MDX2301 to see if it can help prevent severe COVID-19 in healthy adults and those at higher risk. About 80 participants will receive either the antibody or a placebo, given as an injection or infusion. The main goa…

This study is developing and testing a virtual reality tool to help young people aged 15-30 who have experienced trauma and are at risk for substance use and HIV. The goal is to see if the tool can reduce substance use and risky behaviors. Researchers are recruiting young men who…

This study in Tanzania tests whether giving boys a single dose of the HPV vaccine (Gardasil) can lower HPV infections in the community. Over 10,000 participants in 26 communities will be split: some communities vaccinate only girls (as usual), while others also vaccinate boys age…

This study tests a decision aid that helps women in sexual and reproductive health clinics decide whether to take PrEP, a daily pill that prevents HIV. The tool will be used during counseling visits. Researchers will see if it increases PrEP use and if it's practical for clinics.…

This study tests whether the oral medication venlafaxine, typically used for depression, can prevent postherpetic neuralgia—a persistent nerve pain that often follows a shingles rash. Researchers will enroll 832 adults who have had a shingles rash for less than 30 days and are ex…

This Phase 3 trial tests whether taking HIV prevention pills only around the time of sex can reduce the risk of HIV infection in men who have sex with men. Participants take either TAF/FTC or TDF/FTC, starting with a dose 2 to 24 hours before sex and another dose a day later. The…

This study tests a program in the Dallas County Jail that identifies people at high risk for HIV and offers them testing and education about PrEP, a daily pill that prevents HIV. A patient navigator helps interested individuals connect with PrEP providers after they are released.…

This study is testing a mobile app designed to help young Thai adults (ages 18-29) overcome stigma and start or stick with HIV prevention pills (PrEP). The app uses motivational interviewing and tailored content delivered over four sessions. Researchers will enroll 154 participan…

This study tests a combination of programs to help Black gay, bisexual, and same-gender-loving men in the New York City area get tested for HIV and start taking PrEP, a daily pill that prevents HIV. Participants receive one or more of the following: a 3-session empowerment worksh…

This trial tests a program called the Five Point Initiative, which brings HIV testing, PrEP education and prescriptions, and condoms to everyday spots like barbershops, salons, and corner stores in predominantly Black communities in Miami. Researchers want to see if this approach…

This trial tests three ways to screen adolescents and young adults for HIV in emergency departments: targeted screening based on risk, universal opt-in screening offered to everyone, and universal opt-out screening where testing is done unless declined. The goal is to see which a…

This trial tests whether offering a menu of HIV prevention options — including daily pills and a vaginal ring — helps more young women aged 18–30 start and continue using PrEP. About 1,400 women seeking reproductive health services at clinics in Kenya will be offered either stand…

This trial tests whether offering young people aged 15-30 in rural South Africa a choice of long-acting HIV prevention methods—such as a two-monthly injection or a vaginal ring—alongside standard daily pills and emergency prevention, increases how many start and stay on preventio…

This study tests a mobile health program called WINGS+PrEP for women who have experienced heavy drinking, partner violence, and involvement with the criminal legal system. The program provides information about PrEP (a daily pill that prevents HIV) and offers support sessions. Re…

This study tests a new way to offer HIV prevention pills (PrEP) to people visiting family planning clinics in Kenya. Instead of requiring a separate appointment, HIV counselors will provide PrEP screening and prescriptions right at the family planning visit. The goal is to see if…

This study tests four different approaches to help people who inject drugs remember and stick with their daily HIV prevention pill (PrEP). Researchers will enroll 256 adults who are newly on medication for opioid use disorder and have started PrEP. The goal is to see which method…

This study in Botswana tests whether offering sexually transmitted infection (STI) testing alongside HIV prevention medication (PrEP) helps more pregnant women start and continue using PrEP. About 600 pregnant women without HIV will be split into two groups: one gets standard car…

This study tests whether at-home HPV self-sampling (using urine or a vaginal swab) can help more people get screened for cervical cancer compared to the traditional in-clinic Pap smear. About 735 Latinx individuals aged 30-65 who haven't had a Pap test in at least three years wil…

This study tests whether a monthly injection of naltrexone can prevent fentanyl overdose in people who use stimulants like cocaine or methamphetamine but do not intentionally use opioids. One hundred participants will either receive the shot or standard harm reduction supplies. R…

This study tests whether giving HIV prevention pills (PrEP) to people right in the emergency room helps them start and stay on prevention. Researchers will enroll 250 HIV-negative adults at risk for HIV in Dallas. Participants get a 30-day pill supply and a clinic appointment to …

This pilot study tests whether a peer-driven program can help people who inject drugs in Baltimore reduce their risk of HIV, hepatitis C, and overdose. Researchers will identify high-risk injection settings and train peers to promote safer practices, like carrying naloxone and av…

This study tests a program called CUPID that helps couples make decisions together about HIV prevention. About 1,424 women in Uganda will join with their male partners to choose and use PrEP (medicines that prevent HIV). The goal is to see if partner support increases women's use…

This study tests an online program called all2GETHER that teaches relationship and communication skills to gay, bisexual, and queer men, as well as transgender and non-binary people who partner with cisgender men. The goal is to see if the program can lower HIV and STI rates. 5,0…

This study tests two approaches to help men who have sex with men and use methamphetamine start or restart HIV prevention (PrEP) or treatment (ART). 400 participants will receive either contingency management (rewards for filling prescriptions) alone or combined with motivational…

This study looks at the safety of two HIV prevention methods (a long-acting shot and daily pills) in pregnant and breastfeeding women in Malawi. About 621 women who are already using or start these drugs during pregnancy will be followed along with their infants. The goal is to s…

This large study in Denmark is testing whether the shingles vaccine (Shingrix) can do more than prevent shingles—it may also lower the risk of heart attacks, strokes, and dementia. About 162,000 adults aged 65 and older will either get the vaccine or no vaccine, and researchers w…

This study in Uganda tests whether offering HIV self-testing and PrEP (a daily pill to prevent HIV) at home during routine TB contact tracing can increase HIV prevention. About 2,480 people from households with a TB patient will be randomly assigned to either home-based HIV testi…

This study tests a new way to prevent HIV by giving a long-acting injectable medication called lenacapavir through mobile health vans. It aims to reach 100 people in Los Angeles who are unhoused or unstably housed and face barriers to regular clinic visits. Participants receive t…

This study tests whether teaching Black male caregivers how to talk about sexual health can help protect Black girls aged 14-18 from HIV, other sexually transmitted infections, and sexual violence. The program involves 612 pairs of girls and their male caregivers. Researchers wil…

This study tests a program called Shamba Maisha that provides farming tools, training, and school gardens to families in Kenya. The goal is to reduce food insecurity and poverty, which are linked to higher STI and HIV risk in adolescent girls. Researchers will follow 900 girls an…

This study tests a program called CHORUS+ that helps people who inject opioids get HIV prevention medication (PrEP) and treatment for opioid use disorder (MOUD). Participants receive HIV self-testing, rapid access to medications, and 6 months of support from a peer coach. The goa…

This study checks how well the HPV vaccine prevents cervical HPV infection in women in Sikkim, India, about 7 years after the vaccine was introduced. Researchers will collect cervical samples from 5,500 married women aged 18-22 and compare infection rates to those before vaccinat…

This study in Brazil offers young men who have sex with men, transgender, and non-binary people a choice between a daily pill or a twice-yearly injection to prevent HIV. Researchers will follow 1,500 participants for up to two years to see how well each option works in real life,…

This study tests a program to help Black women in Baltimore start taking PrEP, a medication that prevents HIV. The program addresses challenges like intimate partner violence and racism that can make it hard to get PrEP. About 300 Black women who are HIV-negative and at risk will…

This study looks at people with HIV between the ages of 65 and 74 to find those at risk for frailty—a condition that can lead to falls, hospital stays, and disability. Participants will be screened using a simple test called the Fried scale, and those at risk will receive a speci…

This study tests whether people living with HIV can accurately collect their own swab samples to screen for HPV, a virus that can lead to anal cancer. Researchers will compare self-swabs to those taken by a doctor and ask participants which method they prefer. If self-screening w…

This study compares two ways of offering HIV prevention medications, hepatitis C treatment, and substance use disorder care to people who inject drugs. Participants will receive services via telehealth and be followed for 12 months. The goal is to see which approach works best fo…

This study tests a new school-based program to encourage HPV vaccination among 11-17 year olds in France. HPV is a common virus that can cause cancer, but vaccination rates are low. The program will be used in middle and high schools, and researchers will check if more teens get …

This study tests whether virtual reality (VR) can help healthcare workers and COVID-19 patients with posttraumatic stress disorder (PTSD). Participants will use VR headsets during 10 therapy sessions over 5 weeks to safely revisit and overcome traumatic memories. The goal is to s…

This study tests whether doing tai chi/qigong over Zoom twice a week for 12 weeks can reduce depressive symptoms in people aged 50-75 living with HIV. About 326 participants will be randomly assigned to either tai chi or a health education class. Researchers will track mood, hear…

This study tests an oral drug called vapendavir in 180 adults with COPD who catch a rhinovirus (common cold). The goal is to see if it can reduce the severity and length of breathing symptoms compared to a placebo. Participants are randomly assigned to one of two doses or a place…

This study is testing a new program called QUIT-AD to help people living with HIV or tuberculosis (TB) in Cape Town, South Africa, quit smoking. The program combines proven methods to support smoking cessation and improve HIV/TB treatment results. Researchers will enroll 86 daily…

This study tests whether a 5-session online program teaching positive thinking skills can help people with HIV who use stimulants. Researchers want to see if it reduces stimulant use and depression by changing brain and immune function. 189 participants will be followed for 3 mon…

This study tests a 10-session peer-led program called Bridge to Belonging, designed to reduce loneliness and depression in older gay and bisexual men living with HIV. The program uses group sessions to build social skills and connect participants with LGBTQ+-affirming community s…

This study will test four medical devices (HMG, PHN, PHR, TUR) in 160 adults with sore throat from acute pharyngitis or viral tonsillitis. The goal is to see if they are safe and help reduce symptoms like pain when swallowing. Participants will use the device for up to 7 days and…

This study tests a new pill containing three ingredients (dipyrone, caffeine, and chlorpheniramine) to see if it works as well as a standard cold medicine for relieving stuffy nose and other cold and flu symptoms. About 620 adults with early cold or flu symptoms will take either …

This study is testing four medical devices (PIR, NS, NHE, NHG) in 150 adults with acute viral rhinitis, rhinosinusitis, or rhinopharyngitis (common cold). The goal is to see if they are safe and help reduce symptoms like sneezing, runny nose, and sore throat. Participants use the…

This study is testing a type of talk therapy for people who have both HIV and PTSD. The therapy helps people understand how trauma affects their emotions and relationships. The goal is to see if this therapy is helpful and acceptable for this group. About 20 adults with HIV and P…

This study tests a home-based exercise program for people who were hospitalized with severe COVID-19. Participants use a smartphone app to guide them through high-intensity interval training and other exercises. The goal is to see if this approach improves walking ability, fitnes…

This study looks at whether hormone therapy (estrogen with or without progesterone) can safely reduce hot flashes and night sweats in women living with HIV. Researchers will also check if it improves sleep, mood, thinking, bone health, and quality of life. About 105 women aged 40…

This study tests whether a single dose of baloxavir marboxil (Xofluza) can help adults hospitalized with severe flu recover faster. About 484 participants in Switzerland will receive either the drug or a placebo. Researchers will measure time to clinical improvement, hospital sta…

This study tests whether breathing pure oxygen in a pressurized chamber (hyperbaric oxygen therapy) can improve thinking, memory, and other symptoms in people with long COVID. About 91 adults who have had cognitive problems for at least 3 months after a COVID infection will be ra…

This study tests a 6-month holistic behavioral health program called EASE for 200 adults with HIV or seeking HIV prevention who also use alcohol or drugs. Participants receive counseling, case management, peer support, and education. Researchers will measure changes in depression…

This study tests an 8-week hybrid exercise program for people with HIV who are at risk for heart failure. Participants attend one supervised session at a center and do two unsupervised home workouts each week, plus receive education and coaching. The goal is to see if this approa…

This study follows 500 adults in France who have either a genetic defect or autoantibodies that weaken their type I interferon immune response. Researchers will collect blood samples and health data over 1 to 4 years to track infections, autoimmune diseases, and cancers. The goal…

This study observes how many eligible infants in Queensland receive the RSV immunisation (nirsevimab) during their first RSV season. Researchers will survey 1,200 parents to understand why they chose for or against the shot, and look at factors like location and health risks. No …

This study aims to find the safest and most effective dose of a specific flu virus to give to healthy adults in a controlled setting. About 90 volunteers aged 18 to 55 will be exposed to the virus or a placebo and closely monitored. The goal is to create a reliable model for test…

Researchers want to understand how HIV builds a hidden reservoir in the body when someone starts treatment during the earliest stage of infection. The study follows 70 recently infected people who begin combination antiretroviral therapy right away. Over two years, participants g…

This study investigates whether platelets—tiny blood cells involved in clotting—interact with HIV-infected immune cells in ways that affect the virus's ability to persist despite treatment. Researchers will collect blood samples from 90 adults with HIV who have had undetectable v…

Researchers follow people with HIV who took part in earlier HIV-NAT studies to see how their health changes over many years. The study collects information on treatment history, side effects, other illnesses, and lab results such as viral load and CD4 counts. By tracking a large …

This study aims to understand where HIV hides in the body when people stop their daily antiretroviral therapy (ART) for a short time. Fifty adults with HIV will either stay on ART or pause it for up to 90 days. Researchers will use PET/CT scans and take small tissue samples from …

This study looks at people who have had unusually severe or long-lasting viral infections, like serious cases of herpes, HPV, or the flu. Researchers want to find out if these people have hidden immune system or genetic problems that make them more vulnerable. Up to 600 participa…

This study looks at HIV that stays hidden in the body even when the virus is under control. Researchers will measure the 'latent HIV reservoir' in 130 Ugandans with HIV and compare it to similar groups in the US. Participants give blood samples and answer health questions. No new…

This study aims to find out whether people with long COVID still have inactive remnants of the SARS-CoV-2 virus in their bodies. Researchers will collect tissue samples from 12 adults who have recovered from COVID-19, some with long COVID symptoms and some without. The goal is to…

This study collects white blood cells from HIV patients through a process called leukapheresis to examine how the immune system responds to early treatment. Researchers aim to enroll 60 adults—30 with early HIV and 30 with chronic HIV—who are not yet on antiretroviral therapy. Pa…

This study collects blood, bone marrow, and tissue samples from people with HIV, KSHV, or certain cancers to help researchers learn more about these diseases. Participants must be 18 or older and may have HIV, KSHV, or related conditions. No treatment is given; the goal is to gat…

This study collects white blood cells and plasma from 400 people with HIV, including rare 'non-progressors' who control the virus without medication. Researchers will analyze immune responses and genetic markers to understand what makes these individuals special. The goal is to u…

This study looks at why some people with HIV develop Immune Reconstitution Inflammatory Syndrome (IRIS) after starting HIV medications. Researchers will use PET scans and lymph node biopsies to track inflammation and immune recovery in 300 adults. The goal is to better understand…

This study aims to learn more about how HIV infects cells and affects the immune system by collecting blood samples from up to 2,419 adults, both with and without HIV. Researchers will analyze these samples to compare genetic and protein differences. The goal is to better underst…

This study follows 600 people with GATA2 deficiency, a genetic disorder affecting the immune system and other body systems. Researchers aim to understand the full range of health problems it causes and why it affects people differently. Participants will have yearly check-ups for…

This study follows people infected with HTLV-I virus, some of whom develop a rare spinal cord condition called HAM/TSP. Researchers will track changes in symptoms, immune system markers, and virus levels over time. The goal is to better understand why only a few infected people g…

This study collects blood plasma and white blood cells from healthy volunteers and people with HIV using a procedure called apheresis. The samples are used for laboratory research on infectious diseases and immune function. Up to 3,000 participants aged 18 and older will be enrol…

This study looks at why some people with HIV who have very low virus levels in their blood still develop thinking and memory problems. Researchers will follow 1,150 participants—including healthy volunteers—for up to 10 years, using brain scans, blood tests, and spinal fluid samp…

This study collects blood, urine, bone marrow, and tumor samples from people with hairy cell leukemia and other blood cancers, as well as from healthy volunteers. Researchers will use these samples to study the diseases and develop new treatments called immunotoxins, which use an…

This study screens up to 5,000 healthy adults aged 18-65 to see if they can join future research on infectious diseases like flu and Zika. Volunteers undergo a 3-5 hour checkup including blood tests, heart exam, and chest X-ray. The goal is to build a pool of eligible participant…

Researchers are studying people in Réunion and Mayotte who seek care for dengue, chikungunya, or Zika to understand why some cases become severe. The study collects blood and urine samples and asks patients about their quality of life. By comparing clinical, demographic, and envi…

This study aims to learn more about oropharyngeal carcinoma, a type of throat cancer that can be linked to HPV. Researchers will collect blood samples from 1,000 patients before treatment and at six follow-up visits, and also gather tumor tissue when available. The goal is to bet…

This study aims to collect samples and medical information from people of all ages who have or have been exposed to viral infections, including COVID-19 and herpes. Researchers want to understand how viruses affect healthy individuals versus those with weakened immune systems. Pa…

OPERA is a large observational database that collects health records from people treated for chronic conditions such as HIV, liver disease, inflammatory bowel disease, heart disease, rheumatic disease, and neurodegenerative disease. Researchers use the records to study how these …

This study looks at whether people with HIV have chronic pain because their bodies don't make enough natural painkillers (opioid peptides). Researchers will test pain sensitivity in 200 adults (with and without HIV) using heat, touch, and pressure. The goal is to understand the c…

This study collects tissue and blood samples from adults with HIV, other immune disorders, or cancers thought to be caused by viruses. Researchers will compare genes in cancer tissue to normal tissue to find genetic changes that drive these cancers. The goal is to better understa…

This study follows 400 people with mitochondrial disease and their household members to learn how infections affect them. Researchers will analyze blood samples and health records to find immune patterns linked to severe illness. The goal is to improve care and identify potential…

This study aims to understand how the human body responds to dengue virus infection, including in people who have had dengue before. Healthy volunteers aged 18 to 50 receive a single injection of a weakened dengue virus and are closely monitored for six months. Researchers measur…

Researchers are running a worldwide survey to learn how COVID-19 affects children and adults who have primary immune deficiencies, a group of rare inherited conditions that weaken the immune system. Doctors enter health information about their patients who had confirmed or probab…

This study aims to learn more about liver diseases like hepatitis B, C, and D by observing up to 8,050 participants over time. Participants will have yearly check-ups, blood and urine tests, and liver ultrasounds. Some may be offered experimental treatments if they qualify. The g…

This study looks at how viruses change the environment around tumors in people with lymphoma, lung cancer, or anal cancer. Researchers will analyze blood and tumor samples from 254 patients to understand why some cancers resist treatment. The goal is to find new ways to make anti…

This study follows 1,590 adults who have had COVID-19 to track their symptoms and recovery over three years. Participants complete phone interviews and online surveys every three months. The goal is to describe the range of recovery experiences and identify factors that lead to p…

This study enrolls healthy adults who are already part of a respiratory virus challenge study at the NIH. Participants wear a smartwatch and use a smartphone to track temperature, heart rate, coughs, and other health signals. The goal is to see if these devices can detect subtle …

This study, run by the National Institute of Allergy and Infectious Diseases, collects blood and stool samples from up to 5,000 people of all ages who have or had COVID-19, as well as those heavily exposed but uninfected. Researchers will analyze immune responses and genetic fact…

This study collects blood, urine, bone marrow, and tissue samples from over 1,200 adults with lymphoid cancers or precancerous conditions. The goal is to help researchers better understand cancer biology, which may lead to new methods for diagnosing or treating these diseases. No…

This observational study enrolls 2,500 people with HIV to build a detailed bank of blood samples and health records. Researchers will use these specimens to investigate how the virus behaves, why some people progress slowly or control the virus without medication, and how antiret…

This study reviews medical records from up to 400,000 U.S. Veterans to see how COVID-19 treatments like Paxlovid and remdesivir are used and how well they work. It also looks at RSV and flu patterns. The goal is to improve treatment strategies for respiratory viruses in the VA he…

This study will track 10,000 adults in Hong Kong with respiratory symptoms to measure how often RSV causes illness and how severe it gets. Researchers will collect nose and throat samples and blood tests over several weeks. The goal is to fill knowledge gaps about RSV in adults a…

This study follows 150 adults with Kaposi sarcoma (KS) for up to 10 years to learn how the disease behaves, why it comes back, and how it affects the immune system and organs. Participants will have regular check-ups, scans, and biopsies, but no new treatments are being tested. T…

This study collects blood, bone marrow, and tumor samples from 500 adults with cancer or pre-cancerous conditions. Researchers will use these samples to learn more about how cancers behave and why some respond differently to treatments. Participants provide samples over time and …

This study follows 700 people with progressive multifocal leukoencephalopathy (PML), a rare brain infection caused by the JC virus. Researchers will collect blood, spinal fluid, and brain scans over time to understand how the disease progresses. No treatment is given; the goal is…

This study follows 950 people with idiopathic CD4+ lymphocytopenia (ICL), a rare condition where low CD4+ white blood cells raise infection risk. Researchers will track participants for up to 10 years, collecting medical history, blood samples, and infection data. The goal is to …

This study sets up a monitoring program to track pregnancy outcomes and newborn health in HIV-positive and HIV-negative women at clinics in the IeDEA network. Researchers will watch for complications like miscarriage, preterm birth, and congenital abnormalities. The goal is to be…

This study aims to understand why some people develop Long COVID—persistent symptoms after a COVID-19 infection—by tracking symptoms over time and analyzing saliva samples. Researchers will follow 500 adults aged 18 to 75 who have previously tested positive for SARS-CoV-2, collec…

This study is collecting blood and other samples from 5,000 children and young adults (under 21) who are already taking certain medications as part of their regular care. The goal is to understand how these drugs move through and affect children's bodies, so doctors can prescribe…

This study follows 1,500 people with Epstein-Barr virus-positive T/NK-cell lymphoproliferative diseases — rare conditions where the virus drives abnormal immune cell growth. Researchers will collect medical history, treatment details, and blood samples to see how the diseases beh…

This study is testing whether a quick finger-stick test can help find more people with hepatitis C and get them into treatment. About 60,000 adults at risk for hepatitis C will take the test at clinics, shelters, or prisons. The study itself does not provide treatment, but will c…

This observational study will enroll 190 hospitalized adults with dengue in Bangladesh to see if a 'leaky gut' — where bacteria and toxins escape the intestines into the blood — is linked to severe disease. Researchers will measure gut leakage markers in blood, perform abdominal …

This study aims to develop a predictive model for mortality in critically ill patients who carry multidrug-resistant gram-negative bacteria (MDR-GNB). Researchers will follow about 1,500 adults in intensive care units (ICUs) who are colonized with these bacteria, tracking their i…

This study will track which respiratory viruses—like flu, COVID-19, and RSV—are circulating in French primary care clinics each winter. Up to 25,000 patients with cold or flu symptoms will provide a saliva or nose swab sample. The goal is to monitor virus activity and help guide …

This study follows 250 people newly diagnosed with HIV and 161 healthy volunteers over five years to see who develops metabolic fatty liver disease (MASLD). Researchers use annual blood tests, ultrasounds, and FibroScans to measure liver fat and stiffness. The goal is to uncover …

This study examines whether concentrating ovarian cancer surgery in specialized centers and changes in treatment during the COVID-19 pandemic affect how long patients live without their cancer returning. Researchers will follow about 200 women diagnosed with epithelial ovarian ca…

This study follows 800 adults who have recovered from COVID-19 to understand how their immune systems respond over the long term. By collecting blood samples and health data, researchers hope to uncover why some people develop lingering symptoms, known as Long COVID. The goal is …

This study aims to find undiagnosed cases of advanced liver fibrosis and viral hepatitis B and C in the general population of Seine Saint Denis, France. Using a combination of rapid diagnostic tests and a portable liver stiffness scanner (FibroScan), researchers will screen 600 a…

This large observational study follows 13,000 UK adults to understand who gets COVID-19, how the disease progresses, and its long-term effects on physical and mental health. Researchers track risk factors, symptoms, and outcomes like hospitalization. The data may also serve as a …

This study will give healthy, vaccinated adults aged 18-50 a dose of the Omicron EG.5.1 COVID-19 variant through nose drops to safely create a mild infection. Researchers aim to find the right dose that infects 50-70% of volunteers with few or no symptoms. Participants will stay …

This study will test a new 3D imaging device called SkinScan3D to see if it can measure Kaposi Sarcoma skin lesions more accurately and consistently than the current manual method. Researchers will compare the two methods in 300 adults with confirmed Kaposi Sarcoma who are starti…

This study looks at how natural hormones and hormone therapy (like birth control or gender-affirming hormones) affect the way the HIV prevention drug cabotegravir works in the body. Researchers will measure drug levels in blood, tissues, and fluids in 32 HIV-negative adults. The …

This study looks at the immune system's response in infants aged 6 months or younger who are hospitalized with RSV bronchiolitis. Researchers will collect nasal swabs and blood samples to measure immune markers like interferons and cytokines. The goal is to understand why some ba…

This study will analyze samples from 130 ICU patients with ARDS (a severe lung injury) to better understand why the condition varies so much between people. Researchers will examine lung fluid, blood, and CT scans to identify distinct biological subtypes. The goal is not to test …

This study looks at skin problems that appear during a COVID-19 infection, with a special focus on chilblains (painful red or purple bumps on fingers or toes). Researchers want to understand why these skin changes happen—whether from the virus itself, tiny blood clots, or inflamm…

This study reviews medical records of over 5,600 people with HIV to see how many might need special dental care due to low immune cells or blood issues. The goal is to help dentists know when to take extra steps and when standard care is safe, reducing stigma. It is an observatio…

This study is following 1,000 people in the Alpes-Maritimes region of France to see how many were infected with the coronavirus during the deconfinement period. Researchers are using blood tests to measure immune responses and will also look at how air pollution might affect the …

This study in South-East Austria looks at past lab results to find people with hepatitis B, C, or D who may not know they have it. Researchers will invite these individuals to a clinic to discuss treatment options. The goal is to connect them to care and track how many get cured,…

This study follows 300 infants to understand how catching RSV very early (before 4 months old) versus later (after 6-9 months) affects their immune system and long-term health. Researchers will measure antibody responses and track asthma-like symptoms. The goal is to learn why ea…

This study aims to find out how common anti-annexin A2 antibodies are in people hospitalized with COVID-19 and whether these antibodies are linked to lung damage or blood clots. Researchers will test blood samples from 300 adult patients at one hospital. The goal is to see if the…

This study is looking at 100 adult patients who have had an organ or stem cell transplant and later developed a CMV infection that is resistant or hard to treat with standard antiviral drugs. Researchers want to find out how common this problem is and what factors make it more li…

This study looks at why some people had severe COVID-19 while others had mild symptoms. Researchers will compare the immune system's early response (called interferon) in 134 adults who were sick during the first wave. They also want to see if gut bacteria play a role. The goal i…

This study looks at why oral rotavirus vaccines are less effective in some low-income countries like Zambia. Researchers will collect blood, stool, and tissue samples from 43 adults to study how gut health and the immune system affect vaccine response. The goal is to find biologi…

This observational study will follow 2,500 people aged 14–55 who are at risk for HIV across multiple countries. Researchers will track how many new HIV and other sexually transmitted infections occur over time. The goal is to gather data that could help design future studies aime…

This study looks at whether being more forgiving and holding less resentment can improve quality of life for people living with HIV. Researchers will follow 206 participants at a French hospital, measuring their tendency to forgive and their well-being. The goal is to see if forg…

This study in Malawi aims to understand why COVID-19 was much less severe there than in Europe and the Americas. Researchers will follow 1500 people, including those infected and their household contacts, to see how factors like prior infections, nutrition, and immune responses a…

This study in Zambia will follow about 11,800 people with advanced HIV who are starting or restarting antiretroviral therapy (ART). Researchers want to learn who these patients are, what challenges they face, and how well they do in the first six months of treatment. The goal is …

This study is creating a large collection of blood samples and health data from 3500 people with hepatitis B, including those who have already cleared the virus. Researchers will use these samples to look for viral RNA patterns that could signal a functional cure. No new treatmen…

This study is creating a large database of health information from 743 adults with HIV/AIDS across Brazil. Researchers will look at how common chronic diseases like heart disease, kidney disease, and cancer are in this group. The goal is to gather data to help improve health poli…

This study is looking at 1,000 liver transplant recipients to see if testing their blood, urine, and tissue samples can detect early signs of chronic kidney disease, acute rejection, or hepatitis C. The goal is to find simple biomarkers that could lead to earlier treatment and fe…

This study looks at why some teenagers and young adults feel tired for months after getting Epstein-Barr virus (the virus that causes mono). Researchers will follow 150 infected people and 150 healthy people for six months, using brain scans, immune tests, and questionnaires. The…

This study collects anonymous symptom descriptions from 1,000 adults through an online platform. An AI tool then searches medical literature to see if it can find reliable biological signals in the free-text descriptions. The goal is to test how accurate and consistent the AI's f…

This study will follow 10,000 people in Australia who have chronic hepatitis B to see how well they are connected to care and treatment. Researchers will collect information from clinics across the country to understand who is getting treated and what their health needs are. No n…

This study is testing a program to help more people in coastal Alabama get tested for HIV, quickly connect to care, and start treatment right away. The program uses data to find areas with high need, helps people link to care when diagnosed, and offers rapid antiretroviral therap…

This study follows 390 adults in Zambia with hepatitis B, some also with HIV, to see how their liver and immune system change over time. Participants join when diagnosed or starting standard antiviral treatment and are monitored for years. The goal is to learn more about the dise…

This study is collecting medical information and biological samples from up to 6,000 people with COVID-19. Researchers want to find out which factors predict severe illness, death, or response to treatment. The goal is to better understand the disease and help guide future care.

This study looks at how serious respiratory infections (like flu, COVID-19, and RSV) affect the ability of adults aged 60 and older to live independently. Researchers will follow 1,600 hospitalized seniors across multiple countries to track changes in daily activities such as bat…

This study is creating a registry of 600 children under 18 with meningitis treated at hospitals across Brazil. Researchers will collect data during and after hospitalization to see how well current treatments work and what long-term problems, like hearing loss, occur. The goal is…

This study looks at the bacteria living in the lungs of people with active tuberculosis (TB) and how they change with treatment. Researchers will compare lung bacteria in diseased and healthy areas, and also check the mouth, nose, and gut. They aim to understand how these microbe…

This study aims to understand why some people lose their sense of smell after a COVID-19 infection and why it doesn't come back. Researchers will collect tiny tissue samples from the nose of 240 people—some with smell problems and some without—to look for differences in cells, in…

This study is a large international registry that will collect health information from 10,000 adults hospitalized with COVID-19. Researchers will track serious outcomes like death, heart failure, and kidney problems. The goal is to learn more about the course of the disease and i…

This study looks at how CBD and THC, two compounds found in cannabis, affect inflammation and brain health in people with HIV. About 90 participants will take both substances in a random order over six weeks. Researchers will measure blood markers and brain function to better und…

This study follows 300 young men who have sex with men (ages 18-24) living with HIV in Ho Chi Minh City, Vietnam, for 12 months. Researchers will track how well they stick to their HIV medication, their viral suppression, mental health, and quality of life. The goal is to underst…

This study looks at how breathing in woodsmoke changes the way your nose's immune system responds to the flu virus. Healthy adults aged 18-49 will be exposed to woodsmoke and then given a live but weakened flu vaccine to mimic infection. Researchers will measure immune markers an…

This study will track 1,200 adults in semi-rural Tanzania to find out how common chronic kidney disease (CKD) is and what factors increase the risk. Participants will have blood and urine tests at the start, after 90 days, and again after one year. The goal is to create better wa…

This study looks at how stress impacts pain, hormone levels, and mood in 120 people with and without HIV, cannabis use disorder, and depression. Participants will complete two sessions of a pain stress task and provide blood samples to measure cortisol and other stress hormones. …

This study looks at how the hepatitis B vaccine triggers T cells, a key part of the immune system. Researchers will test blood from 115 healthy adults 5 to 10 weeks after vaccination to see if they have T cells that recognize the hepatitis B virus. The goal is to understand why s…

This study looks at why the hepatitis B virus (HBV) stays in the liver for so long, even with treatment. Researchers will use a gentle needle technique to take small liver samples from 100 adults with chronic HBV. They want to see how the virus and the immune system interact insi…

This study will compare immune responses in 36 healthy adults aged 18-55 who either receive a nasal spray flu vaccine or are deliberately infected with a controlled dose of influenza A (H3N2) virus. Researchers will track symptoms and measure immune markers in the blood and respi…

This study is creating a large registry and biobank of 10,000 adults with various infections, such as bloodstream, heart, and bone infections. Researchers will collect medical data and biological samples to describe the infections and their treatments. The goal is to better under…

This study follows 650 adults in Quebec to learn about the short- and long-term health problems caused by COVID-19, including damage to the heart, lungs, kidneys, and other organs. Participants include people who had mild, moderate, or severe COVID-19, as well as those who never …

This study tests a method where people newly diagnosed with HIV are asked to recruit anyone they know who might benefit from HIV testing. The goal is to find more undiagnosed cases, especially among men who often avoid testing due to stigma. About 2,480 participants from 32 clini…

This study compares the immune response to COVID-19 vaccines between people being treated for tuberculosis (TB) and healthy individuals. About 133 participants in the Thailand-Myanmar border area will receive one of three vaccines (Pfizer, AstraZeneca, or Janssen). Researchers wi…

This study reviews medical records of 230 children in Italy who received a stem cell transplant between 2018 and 2020. Researchers want to understand how common and costly cytomegalovirus (CMV) reactivation is in these young patients. The goal is to give doctors and health offici…

This study follows 450 HIV-positive adults in France who can naturally control the virus without taking antiretroviral drugs. Researchers want to understand how their immune systems keep the virus in check and why some eventually lose that control. The goal is to learn more about…

This study looks at whether kidney failure changes how well the flu vaccine works in people on dialysis. Researchers will compare the immune response of 146 dialysis patients and healthy volunteers after they get the flu shot. Participants will give blood samples over several mon…

This study follows 150 adults with advanced HIV who are hospitalized in South Africa. Researchers will interview them and review medical records to see if they successfully continue HIV care after leaving the hospital. The goal is to identify where the system fails and find ways …

This study looks at how common certain infections are among 250 asylum seekers living in reception centers in Italy. Participants must be adults who arrived in Italy between 2 and 36 months ago. The goal is to better understand infection rates to improve health screening and care…

This study looks at why some veterans experience ongoing brain fog and other mental health issues after COVID-19. Researchers will track 200 veterans over time, using memory tests and blood samples to find clues. The goal is to better understand these symptoms and identify target…

This study looks at how chronic marijuana use changes brain inflammation and thinking abilities in people with HIV. Researchers will use brain scans and blood tests to measure brain health in 220 adults. The goal is to understand the effects, not to test a new treatment.

This study looks at whether basic vital signs like heart rate, blood pressure, and breathing rate can help doctors track how COVID-19 patients are doing. Researchers will review medical records of 15,000 patients treated between 2022 and 2027. The goal is to see if these simple m…

This study tests a new 3D imaging device called SkinScan3D to see if it can take better pictures of Kaposi sarcoma (KS) skin lesions than standard 2D photos. KS lesions can change in height when they respond to treatment, which 2D photos miss. The study will enroll 30 adults with…

This study looks at whether testing for HPV DNA from a cervical swab or a blood sample can help find cervical cancer that has come back after radiotherapy. Researchers will follow 120 patients for two years after treatment, collecting samples at regular visits. The goal is to see…

This study is working to create better exercise tests for children with cystic fibrosis, sickle cell disease, or long COVID. Current tests are designed for healthy athletes and may not be safe or useful for these kids. Researchers will track 240 children over 3-4 years, measuring…

This study looks at 20 adults in Ethiopia who have both HIV and visceral leishmaniasis (a serious parasitic disease). Researchers want to find out why the parasite keeps coming back in some patients and how to better monitor treatment. Participants provide samples and attend foll…

This study looks at how often young children get ear infections from RSV, a common virus. Researchers will track 1900 children under 2 years old to see how many have RSV-related ear infections, with or without bronchiolitis. The goal is to better understand the burden of RSV in t…

This study follows 345 people who had mpox or received the smallpox vaccine to see if there are any long-term physical or mental health problems. Researchers will also check how long the body's immune memory lasts by testing blood, saliva, semen, and anal swabs over 5 years. Part…

This study is testing whether setting up special HIV teams in hospitals can increase testing for undiagnosed HIV. The teams will remind doctors to test patients with certain health conditions, reduce stigma, and improve care links. Over 5,200 patients across ten European countrie…

This study tracks the immune response of 300 people with confirmed flu or COVID-19, comparing those who were recently vaccinated to those who were not. Participants provide blood, saliva, and nasal samples over 6 months, and some may opt for a lung fluid sample via bronchoscopy. …

This study is testing whether giving the COVID-19 booster and flu vaccine at the same time is as good as giving them a month apart for people with weakened immune systems. It also compares getting a COVID-19 booster every 3 months versus every 6 months. The trial involves 660 adu…

This study is testing whether people with HIV can collect small blood samples at home using a finger prick or a simple device. The goal is to see if these home-collected samples are as good as clinic-drawn blood for measuring levels of HIV medications. About 150 adults already on…

This study looks at how the drug bulevirtide changes gut bacteria and bile acids in people with hepatitis delta (a serious liver infection). Researchers will follow 20 patients for 48 weeks, collecting stool and blood samples to see how these changes relate to liver health. The g…

This study follows 300 women aged 18–40 with severe cervical precancer (CIN 2 or 3) to see how often these lesions regress on their own or after surgery. Researchers will track HPV and Pap test results to identify factors that predict healing. The goal is to create a model that h…

This study compares fat storage around the heart and liver in people with HIV versus the general population using MRI scans. Researchers aim to understand why HIV-positive individuals have double the risk of heart attacks. The study involves 100 participants aged 40 and older wit…

This study creates a registry to collect data on dengue infections in people with congenital bleeding disorders like hemophilia. Dengue can cause serious bleeding, and those with bleeding disorders may face higher risks. The goal is to understand bleeding complications, treatment…

This study looks at how adults in France choose to get tested for HIV voluntarily. Researchers will survey 1,000 people aged 18 and older to see which testing methods they use, such as doctor prescriptions, free testing centers, or self-tests. The goal is to learn more about test…

This study involves giving a weakened dengue virus to 5 healthy adults aged 21-45 in Singapore to safely study how the body fights the infection. The goal is to create a reliable model for testing future dengue vaccines and treatments. Participants will be closely monitored for s…

This study looks at a condition called augmented renal clearance (ARC), where the kidneys work too fast and flush out medications before they can help. It involves 512 adults in intensive care with severe brain injuries, strokes, seizures, or meningitis. Researchers will measure …

This study collects blood and tissue samples from 800 people with chronic liver disease or liver cancer. Researchers will use these samples to create lab models, such as cell clusters and mouse tumors, to study these diseases and test new treatments. The goal is to improve unders…

This study looks at better ways to provide cervical cancer screening and treatment to women living with HIV in Nigeria. About 2,400 women will take part. Researchers will compare two sets of strategies to see which works best for getting women screened and treated. The goal is to…

This study looks at how a type of talk therapy for depression changes the gut microbiome, immune system, and brain function in people living with HIV. Researchers will enroll 150 adults with HIV and depression to understand these connections. The goal is to learn more about how t…

This long-term study follows 19,000 people with or at risk for HIV in Washington, DC to track their health outcomes and quality of care. Researchers will monitor viral suppression rates and new infections over up to 10 years. The goal is to find ways to improve HIV treatment and …

This study pauses HIV medication in 40 volunteers to closely monitor how the virus and body interact during the earliest stages of rebound. Participants stop their antiretroviral therapy and undergo frequent testing, resuming treatment within three weeks. The goal is to learn mor…

This study tests whether a two-part approach—improving communication about viral infections and having pharmacists double-check prescription lengths—can reduce how many days antibiotics are prescribed for respiratory infections like bronchitis, sinusitis, and sore throat. About 4…