Vector-borne disease

This study tests a new triple-drug combination (artemether-lumefantrine-amodiaquine) against standard two-drug treatments for uncomplicated malaria. About 1680 people with malaria will receive one of the treatments and be monitored for 42 days. The goal is to see if the triple th…

This study tests a dengue vaccine (TDV) in children aged 6 to 21 months. The goal is to see if the vaccine is safe and triggers a strong immune response. Participants receive two shots three months apart and are monitored for side effects and antibody levels.

This study tests a new vaccine to prevent chikungunya, a virus that causes fever and severe joint pain. About 6,144 people aged 12 and older will receive either the vaccine or a placebo. Researchers will check if the vaccine safely prevents infection and reduces long-term joint p…

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 tests a new malaria vaccine (PfSPZ-LARC2) in 58 healthy adults who have never had malaria. The vaccine uses weakened malaria parasites that stop growing in the liver and cannot cause blood infection. Researchers will check if it is safe and if it protects a…

This study tests a new vaccine called rF1V-1018 to prevent pneumonic plague, a severe lung infection spread by aerosol. Researchers will give the vaccine to 148 healthy adults aged 18 to 55 to check if it triggers a strong immune response and is safe. The goal is to find the best…

This study tests a new malaria vaccine in 180 healthy adults aged 18-50 in Burkina Faso. The vaccine uses weakened malaria parasites that stop growing in the liver, so they cannot cause blood-stage infection. Participants receive either one or two doses of the vaccine or a placeb…

This study tests an experimental mRNA vaccine (mRNA-1982) designed to prevent Lyme disease, which is spread by tick bites. About 350 healthy adults aged 18 to 70 will receive either the vaccine or a placebo to check for safety and immune response. The goal is to find the best dos…

This study aims to develop a vaccine to prevent malaria during pregnancy. Researchers will test potential vaccines in the lab using blood samples from pregnant women aged 15-25 in Mali. The goal is to see if these vaccines can block the malaria parasite from attaching to the plac…

This study tests the R21/Matrix-M malaria vaccine in about 964 African infants to find the best timing for shots. Researchers compare a compressed schedule (6, 10, 14 weeks) with relaxed schedules (2, 4, 6 months or 3, 6, 9 months) to see which works best with other routine vacci…

This study tests whether a fifth dose of Pfizer's Lyme disease vaccine (VLA15) is safe and boosts immunity in people who already received four doses. About 1,700 healthy volunteers aged 7 and older will get either the vaccine or a saltwater shot. Researchers will compare side eff…

This Phase 3 trial tests a new yellow fever vaccine (vYF) in about 2,440 healthy children aged 9 months to 5 years. Researchers will compare vYF to two licensed vaccines (Stamaril and YF-VAX) to see if it triggers a strong immune response and is safe. Some children will also rece…

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 phase 3 trial is testing a dengue vaccine (TDV) in 800 adults aged 45 to 79, including those with diabetes, high blood pressure, or kidney disease. Participants will receive two shots three months apart. The study aims to check for side effects and measure the immune respons…

This study tests a vaccine against chikungunya virus in about 720 children aged 1 to under 12. The vaccine uses virus-like particles to train the immune system. Researchers will check if it is safe and triggers a strong immune response compared to a placebo.

This study tests a new malaria vaccine designed to target the parasite at different stages of its life cycle. Researchers will give the vaccine to 56 healthy adults (18-35 years) and children (5-17 months) in Burkina Faso to check its safety and how well it triggers an immune res…

This study tests a dengue vaccine in adults aged 60 to 79 and compares their immune response and safety to adults aged 40 to 59. About 997 healthy participants will receive one dose of the Butantan dengue vaccine. The goal is to see if the vaccine works as well in older adults as…

This study tests a booster shot of the R21/Matrix-M malaria vaccine in 40 school-age children in Burkina Faso who already received four doses years earlier. Half get the standard child dose, half get a higher adult dose. Researchers will check for side effects and measure antibod…

This study tests two new mRNA vaccines (GBP560) against Japanese encephalitis, a virus that can cause brain swelling. About 402 healthy adults will receive different doses of the vaccine or a comparison vaccine. Researchers will monitor safety and measure immune responses to find…

This study looks at how well the yellow fever vaccine works and how safe it is for pregnant women compared to non-pregnant women. Researchers will enroll 270 women who received their first yellow fever vaccine either during or outside pregnancy. The goal is to ensure the vaccine …

This study is testing whether giving the RTS,S/AS01E malaria vaccine (Mosquirix) in lower doses or on different schedules is safe and triggers a strong immune response in healthy children aged 5 months to 5 years. The goal is to find simpler ways to vaccinate children in areas wh…

This trial evaluates the safety of a single intravenous dose of DON, an experimental drug, in healthy adults, adults with uncomplicated malaria, and children aged 12 months to 14 years with cerebral malaria. Researchers will monitor side effects and measure how the drug moves thr…

This study tests whether adding imatinib, a drug currently used for cancer, to the standard malaria treatment (artemether + lumefantrine) can clear the malaria parasite faster and fight drug resistance. About 1,100 adults with mild to moderate malaria will receive either the stan…

This study is testing whether the steroid dexamethasone can help people with severe dengue. The researchers will give either dexamethasone or a placebo to 200 infected adults in Thailand. They want to see if the drug lowers the death rate and shortens hospital stays.

This study tests whether using a device that heats skin lesions to 50°C for 30 seconds can effectively treat cutaneous leishmaniasis in primary health centers in Ethiopia. 103 patients aged 12 to 60 with up to four lesions will receive thermotherapy and be monitored for 90 days. …

This study tests an experimental drug called LXE408 in 130 adults with chronic Chagas disease who do not have severe organ damage. The goal is to see if LXE408 can clear or reduce the parasite level in the blood over 6 months, compared to placebo and standard treatment. Participa…

This study is testing whether the BCG vaccine, originally developed for tuberculosis, can safely treat Mycobacterium avium complex (MAC) lung disease. Researchers will give 48 adults either a single BCG injection or a placebo and monitor them for side effects, immune responses, a…

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 the steroid dexamethasone can reduce brain damage in adults hospitalized with tick-borne encephalitis. Researchers will compare disability outcomes in 200 patients who receive either dexamethasone or a placebo. The goal is to see if this treatment lowers …

This study tests a new medicine called CP-COV03 in adults with dengue fever. The goal is to see if it can safely lower the amount of virus in the blood and help people feel better faster. About 210 participants will receive either the drug or a placebo. The trial is currently rec…

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 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 trial is testing whether a 7-day course of doxycycline works as well as the standard 14-day course for people with multiple erythema migrans, a sign of early Lyme disease. About 200 participants will be randomly assigned to one of the two treatment durations. Researchers wil…

This study tests whether using early drug monitoring and a dose-adjustment calculator can help infants under 90 days old with sepsis reach target vancomycin levels more quickly. Currently, doctors must wait 24-48 hours to check drug levels, which can delay effective treatment. Th…

This phase 3 trial tests whether a plant-based tincture made from arnica flowers can safely and effectively heal skin ulcers caused by cutaneous leishmaniasis, a parasitic disease spread by sandflies. About 96 people aged 12 and older with confirmed infection will receive either …

This study tests a new way to find and treat a type of malaria (P. vivax) that can hide in the liver and come back months later. Researchers will use a simple blood test to find people who have been infected recently, then give them a treatment to clear the hidden parasites. The …

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.

This study tests a single dose of tafenoquine in 30 children in Papua New Guinea who have vivax malaria. The goal is to see how the drug moves through the body and if it is safe. Vivax malaria can come back because it hides in the liver, and this drug aims to clear it completely.

This study at the National Institutes of Health evaluates and treats people aged 3 and older with known or suspected parasitic infections, such as malaria, intestinal worms, and others. Participants receive standard medical care, not experimental treatments. The goal is to monito…

This study looks at how safe and effective primaquine is for treating vivax malaria in people with intermediate or deficient G6PD enzyme levels. About 100 adults with confirmed malaria and G6PD deficiency will receive either a high daily dose or a weekly dose of primaquine. The g…

This study tests whether a special graft made from donated placental tissue, called XWRAP, can help heal diabetic foot ulcers that won't close with standard care alone. About 60 adults with type 1 or type 2 diabetes will receive either the graft plus standard wound care or standa…

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 will give a combination of two malaria drugs (dihydroartemisinin-piperaquine and primaquine) to entire communities in Ghana every two months for two years. The goal is to see if this approach can reduce the number of people carrying malaria parasites, even those with n…

This study compares two ways of giving the antibiotic cefepime to very sick patients with sepsis in the ICU. The new method adjusts the dose based on the patient's kidney function, using only standard doses. The main goal is to see if this approach is easy for doctors to use and …

This large clinical trial in West Africa is testing several drugs—including favipiravir, ribavirin, dexamethasone, and a new drug called ARN-75039—to find a better treatment for Lassa fever, a viral disease that kills thousands each year. The study will enroll about 1,755 hospita…

This study tests whether giving zinc supplements along with standard antibiotics can reduce deaths and improve recovery in young infants (0-59 days old) hospitalized with severe infections like sepsis or pneumonia. About 3,250 babies in Tanzania will receive either zinc or a plac…

This study tests different ways to deliver malaria prevention medicine to children under 10 who were hospitalized with severe malaria or severe anemia in Kenya. The goal is to see which method helps more children take all their doses and avoid getting sick again. About 600 childr…

This study compares two drugs, ivermectin and moxidectin, to see which works better at controlling river blindness and other common infections like intestinal worms and scabies in Angola. Over 52,000 people in 20 village groups will receive one of the drugs once a year for four y…

This study compares two antibiotics, clarithromycin and azithromycin, for treating MAC lung infections, a serious bacterial lung disease. About 424 adults with MAC infection will receive one of the two drugs alongside standard treatments. The goal is to see if azithromycin works …

This study tests newer antimalarial drugs to see if they work as well as the current standard treatment for malaria in early pregnancy. It involves 1,510 pregnant women in Africa. The goal is to find treatments that are both effective and safe for the mother and baby.

This study tests whether giving a whole blood transfusion can help children under 5 with severe malaria and very low platelet counts survive. The trial is enrolling 132 children in Zambia. Researchers will compare death rates and blood changes between those who get a transfusion …

This study tests whether adding the antibiotic contezolid to standard drugs can shorten treatment for Mycobacterium Avium Complex (MAC) lung disease. About 188 adults with the nodular bronchiectatic form of the disease will either receive contezolid plus standard therapy for 6 mo…

This study tests whether injecting the antibiotic ciprofloxacin directly into skin sores caused by leishmaniasis works as well as the standard treatment, sodium stibogluconate. Eighty people with one to seven sores will be randomly assigned to receive weekly injections of one dru…

This study is testing the safety of a drug called gallium nitrate in 40 adults with cystic fibrosis who have a difficult-to-treat lung infection called NTM. Participants will receive two 5-day cycles of the drug through an IV. The main goal is to see if the treatment is safe and …

This study tests whether injecting the antibiotic levofloxacin directly into skin sores caused by leishmaniasis can cure them. Forty adults with up to seven sores will receive weekly injections for up to six weeks and be monitored for 90 days. The goal is to see if the sores heal…

This study aims to see how well a new, child-friendly version of the drug praziquantel works to control schistosomiasis in preschool-aged children (2 to 5 years old) in parts of Kenya, Côte d'Ivoire, and Uganda. About 18,500 children will receive the medicine through existing pub…

This study tests whether adding the antibiotic contezolid to the usual three-drug regimen can better reduce bacteria in the sputum of adults with Mycobacterium avium complex (MAC) lung disease. About 188 participants will receive either the standard treatment alone or with contez…

This study is testing a new rapid diagnostic test for Crimean-Congo hemorrhagic fever (CCHF) that gives results in 20 minutes. Researchers will enroll 492 adults in Turkey with suspected CCHF to see if the test is accurate compared to standard lab methods. The goal is to provide …

This study aims to develop a better blood test for early Lyme disease in children. Current tests often miss early infections or give false positives. Researchers will also study the immune response and the types of Lyme bacteria involved. About 500 children with suspected Lyme di…

This study is testing a new blood test called ARBOspot that looks for immune cell responses to viruses spread by mosquitoes and ticks. Researchers will enroll 500 adults in Italy with suspected arbovirus infection. The goal is to see if this test can help diagnose infections that…

This study will evaluate two rapid diagnostic tests (RDTs) for chronic Chagas disease in over 3,200 people at public health sites in Argentina. The goal is to see if these simple, point-of-care tests can accurately detect the infection, making diagnosis faster and more accessible…

This study aims to see if a new PCR-based test can diagnose malaria, leishmania, and pneumocystis infections faster and more accurately than current methods. Researchers will analyze about 200 stored samples from patients. The goal is to improve diagnosis and species identificati…

This early-stage trial tests whether two new long-acting injectable drugs, MMV055 and MMV371, are safe and how they work in the body. Up to 72 healthy adults will receive one or two shots and be monitored for up to 48 weeks. The goal is to find a dose that could one day prevent m…

This study tests whether giving anti-malarial drugs to everyone in a village can eliminate vivax malaria. Over 7,500 people in Peru will be split into two groups: one receiving standard care (bed nets, screening) and the other also receiving mass drug administration. The goal is …

This study tests a new pill called TP-05 (lotilaner) to see if it can prevent Lyme disease in healthy adults who are often around ticks. The pill is already used in pets to kill ticks. Researchers will give either a low dose, high dose, or placebo to 700 volunteers and watch for …

This study in Chad compares two ways of giving the R21 malaria vaccine to children. One group gets the vaccine as part of regular childhood shots, while the other gets it at the same time as seasonal malaria prevention medicine. The goal is to see if the combined approach works j…

This study looks at whether the R21/Matrix-M malaria vaccine can also reduce the risk of invasive non-typhoidal Salmonella (iNTS), a serious bacterial infection. Researchers will follow 10,000 children under 5 in the Democratic Republic of Congo who come to health centers with fe…

This study is testing whether giving entire communities antimalarial drugs along with a malaria vaccine can reduce the spread of the disease better than drugs alone, vaccine alone, or no extra intervention. About 10,000 people aged 6 months and older in malaria-prone villages wil…

This Phase 2 trial is testing a malaria vaccine that aims to both prevent infection and block the parasite from spreading to mosquitoes. Around 1,200 healthy participants aged 9 to 50 in Mali will receive either the R21 vaccine alone or a combination with Pfs230D1-CRM197, both wi…

This study tests whether a daily cordyceps sinensis capsule (Bailiing Capsule) can prevent the recurrence of Mycobacterium avium complex (MAC) lung disease in adults who have already been cured. 300 participants will take either the cordyceps capsule or a placebo for 12 months, w…

This study tests whether inhaling a salty mist (3% hypertonic saline) can improve breathing symptoms in people with nontuberculous mycobacterial (NTM) lung disease who haven't yet started antibiotics. About 262 adults will either start the saltwater treatment right away for 6 mon…

This study tests a small, non-invasive device that gently stimulates a nerve in the ear (taVNS) to see if it is safe and tolerable for people with persistent symptoms after Lyme disease treatment. The trial will enroll 24 adults who still have symptoms like fatigue or pain months…

This study tests a new way to treat brain fog in people with post-treatment Lyme disease. Participants will play computer-based thinking games at home while receiving either real or fake brain stimulation (tDCS) for 4 weeks. Researchers will check if the active stimulation improv…

This study tests a dietary supplement called lumbrokinase in 120 adults with Long Covid, post-treatment Lyme disease syndrome, or ME/CFS. Participants take the supplement daily for 6 weeks. The goal is to see if it improves overall health and quality of life, as measured by a sim…

This study looks at how people's immune systems react to infections from parasitic worms, which can cause serious health problems like swelling, blindness, or heart disease. Researchers will evaluate and treat up to 500 participants aged 3 to 100 using standard medical tests and …

This study looks at how leishmaniasis infections progress and respond to treatment. It involves up to 289 people aged 3 to 100 with known or suspected leishmaniasis. Researchers will collect blood and tissue samples to learn more about the disease and test different treatments. T…

This study investigates whether the bacteria causing Lyme disease can survive antibiotic treatment and cause ongoing symptoms. Researchers will follow 700 participants, including those with chronic Lyme disease, recovered individuals, and healthy volunteers, using blood tests, sp…

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…

This study gives healthy adults a controlled malaria infection using donated blood containing the P. vivax parasite. Researchers will monitor how the infection develops, how the immune system responds, and whether mosquitoes can pick up the parasite from participants. The goal is…

This study looks at how the immune system changes with age and how that affects the risk of infections in people 60 and older. Researchers will collect blood, urine, stool, and other samples from elderly patients with infections and healthy older adults. By analyzing immune cells…

This study is looking for the germs that cause fevers in Cambodia, especially those spread by insects like mosquitoes. Researchers will use advanced genetic testing to find these germs in blood and nasal samples from 6,500 people. The goal is to better understand what is making p…

This large observational study in Mali is following up to 15,000 pregnant women and children to understand why some get malaria and others don't. Researchers are looking at immune responses, parasite features, and other factors that influence infection and disease severity. The g…

This study aims to learn more about non-tuberculous mycobacterial (NTM) infections, which cause repeated lung and other organ infections. Researchers will study up to 1,000 participants to understand the genetics, symptoms, and best treatments for these infections. The study also…

This study collects biological samples like blood, saliva, and urine from 300 adults aged 18-70, both with and without blood disorders such as sickle cell disease and thalassemia. The goal is to use these samples for research to better understand these conditions and related dise…

This study explores the real-life experiences of people who had Lyme disease during or before pregnancy and are now raising children. Participants fill out surveys about their health, mental well-being, and child development, then take part in an interview to share their personal…

This study aims to improve how doctors evaluate and manage people who have been exposed to bioterrorism agents (like anthrax) or emerging infectious diseases (like SARS or new flu strains). Up to 200 participants, including patients and healthcare workers, will be monitored and t…

This study follows 40 pregnant women with Lyme disease to see how the infection might affect their baby's development. Researchers will monitor pregnancies and check infant growth, thinking, and motor skills from birth to 18 months. The goal is to learn if Lyme exposure in the wo…

This study screens healthy adults aged 18 to 50 to see if they can join future malaria research trials. The goal is to find safe and effective malaria vaccines, drugs, or prevention methods. Participants will have a medical history check, physical exam, and blood and urine tests.…

This study follows 500 people with active Lyme disease to learn more about the infection. Participants receive standard FDA-approved treatments and undergo tests like blood draws and leukapheresis. The goal is to explore biological markers, track clinical outcomes, and understand…

This study looks at how healthy people's skin and immune system respond to tick bites. Researchers will place clean, lab-bred ticks on volunteers' skin and take small skin samples and blood to track changes. The goal is to understand tick resistance and help design future vaccine…

This study looks at whether what patients expect before treatment for early Lyme disease (a red rash called erythema migrans) influences how well they recover. Researchers will follow 200 patients for up to a year, checking for lingering symptoms and comparing them to healthy peo…

This study tests a new, lightweight ultrasound device called NeoDoppler that can be gently placed on a newborn's soft spot (fontanelle) to continuously measure blood flow in the brain. Researchers will enroll 180 preterm and full-term infants, including those with conditions like…

This study is looking at whether early signs of inflammation in the blood can help identify which patients with infections are at risk for serious complications like sepsis. Researchers will follow 4,200 adults with confirmed or suspected infections, as well as healthy controls, …

This study looks at whether the dengue vaccine (TDV) helps prevent hospital stays due to dengue in children and teens in Thailand, Indonesia, and Malaysia. Researchers will follow 70,000 participants for 3 years, comparing those who got the vaccine with those who did not. The goa…

This study tracks 200 children in Italy with leishmaniasis, a parasitic infection that can affect the skin or internal organs. Researchers will look at how quickly the disease is diagnosed and treated, and how that affects recovery, relapse, and death rates. The goal is to identi…

This study looks at what happens in the body right after a tick bite. Researchers want to learn why some people develop a food allergy to red meat, called alpha-gal syndrome. About 100 adults who have been bitten by a tick will donate blood and their tick for testing. The goal is…

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 early-stage trial is testing a new drug called GSK4024484 in 156 healthy adults to see if it is safe and how the body handles it. Researchers will also check if food affects the drug. The goal is to gather safety information before testing it in people with malaria.

This study aims to find the smallest number of infected mosquito bites needed to give healthy adults malaria. Twenty-four volunteers will be bitten by 1, 2, or 3 mosquitoes carrying the Plasmodium vivax parasite. The results will help researchers develop better ways to test futur…

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 aims to find out how common female genital schistosomiasis (FGS) is among migrant women aged 15-49 who have gynecological symptoms and come from countries where the parasite is found. Researchers will use vaginal swabs and PCR tests to detect the infection, which is no…

This study looks at how the antibiotic ceftazidime avibactam behaves in 30 children with severe infections who are in intensive care, some on life support. Researchers will measure drug levels in the blood to understand the right dose. The goal is to improve treatment for life-th…

This study is collecting information on pregnancy and malaria in 9,500 women aged 15-49 in Kalifabougou, Mali. Researchers will track pregnancies, malaria cases, and pregnancy outcomes like preterm birth and anemia. The goal is to better understand these health issues in the comm…

This study is tracking 600 children and adults in Sweden who may have tick-borne diseases. Researchers will monitor their health over six months to better understand symptoms, improve diagnosis, and develop clearer treatment guidelines. The goal is to help doctors manage these in…

This study looks at how the antifungal medicine caspofungin behaves in children with severe infections, especially those with liver problems or on life support like ECMO. Researchers will measure drug levels in the blood to understand dosing needs. About 60 children in intensive …

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 will collect data from 2,000 children admitted to pediatric intensive care units (PICUs) with severe infections across major Chinese cities. Over 10 years, researchers will track which germs cause these infections, how they are treated, and patient outcomes. The goal i…

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 two common antibiotic combinations given to hospitalized adults with infections: vancomycin plus piperacillin-tazobactam, or vancomycin plus cefepime. The goal is to see if one is less likely to cause kidney injury than the other, using more sensitive markers …

This study is building a large registry and biorepository of 5,000 adults with various rheumatic diseases like rheumatoid arthritis, lupus, and scleroderma. Researchers at Yale University will collect medical data and biological samples over time to better understand these condit…

This study follows 380 children in Uganda for two years to understand how malaria and HIV treatments interact. Half the children have HIV and half do not. Researchers will measure changes in body weight, blood sugar, and drug levels to find the best ways to treat both infections …

This study tracks 500 pregnant women in the US who received the Dengvaxia dengue vaccine. Researchers will monitor mothers and their babies for any side effects or pregnancy complications. The goal is to gather safety data, not to test the vaccine's effectiveness.

This study will test 10,000 people in Cambodia for 57 different infectious diseases, including dengue, flu, and malaria. Researchers want to understand how these diseases spread and who is at risk. The goal is to give local health authorities the information they need to create b…

This study looks at cases of severe Lyme disease (disseminated borreliosis) in patients who have received anti-CD20 therapy, a type of immune-suppressing treatment. Researchers want to describe the symptoms, severity, and progression of the infection in these patients. The study …

This observational study will follow 500 adults and children in the DRC who come to the clinic with a fever. Researchers want to see if using a simple blood test (CRP), a WHO antibiotic guidebook, or electronic decision tools can help doctors prescribe antibiotics more appropriat…

This study looks back at cases of recurrent borreliosis, a bacterial infection spread by ticks or lice, diagnosed in France between 2013 and 2025. Researchers will describe the symptoms, where patients got infected, which Borrelia species caused the illness, and how it was diagno…

This study aims to safely give healthy Thai adults a controlled malaria infection using frozen infected blood cells. Researchers will monitor participants closely in a hospital to find the best dose for future studies. The goal is to learn more about the malaria parasite and help…

This study aims to see if it's safe and possible to give healthy Thai adults a controlled infection of P. vivax malaria through mosquito bites. Six volunteers will be infected and monitored closely. The goal is to develop a reliable model for future research on malaria and immune…

This study collects information from about 100 adults in Alsace who have had a confirmed case of human anaplasmosis, a bacterial infection spread by ticks. Researchers want to learn more about how common it is, what symptoms people have, and how serious it can be. The goal is to …

This study creates a global registry to collect information from 200 people with hantavirus infections. Researchers will track how the disease spreads, its symptoms, and what treatments doctors use. No new treatments are tested; the goal is to gather knowledge to improve future c…

This study follows 209 children and adults hospitalized with tick-borne encephalitis (TBE) in the Czech Republic for one year after discharge. Researchers track symptoms like fatigue, headaches, memory problems, and weakness to see how long they last and who needs extra support. …

This study tests whether a digital vaccination record system linked to fingerprints can help more children in Ghana complete their malaria vaccine series and other routine shots. About 4,700 pregnant women and mothers of young children will take part. The system will automaticall…

This study aims to understand how viruses spread in Fiji by tracking about 900 people over three years. Participants will provide blood samples and answer questions about their health. The goal is to learn about immunity and transmission to help prepare for future outbreaks.

This pilot study is testing whether a smart wristband can accurately measure drug levels in sweat compared to standard blood tests. Researchers will collect sweat, saliva, and blood samples from 100 patients with chronic or infectious diseases who are taking medications like cycl…

This study is looking for new ways to diagnose sepsis, a life-threatening reaction to infection, earlier in the emergency room. Researchers will study the immune responses of 3,300 adults with suspected infections to find patterns that signal sepsis. The goal is to improve diagno…

This study surveys 100 doctors and trainees in France to assess their knowledge of tick-borne encephalitis, a rare but serious viral infection spread by ticks. The goal is to see if doctors in high-risk areas are more aware than those elsewhere, and to identify gaps that could im…

This very early study is testing a new drug called E1018 in 32 healthy adults to see if it is safe and how the body processes it. Participants receive a single oral dose of either E1018 or a placebo. The goal is not to treat malaria, but to gather initial safety data before any f…

This study aims to find genetic reasons why some people, especially younger ones without other health issues, develop severe listeriosis from contaminated food. Researchers will collect blood, skin, and saliva samples from 100 patients and their relatives. The goal is to identify…

This study follows 100 people with confirmed dengue to identify which symptoms and lab results predict hospitalization. It also tracks how often blood transfusions are given and their outcomes. The goal is to improve care for dengue patients, not to test a new treatment.

This study aims to better understand how the spleen filters and responds to abnormal blood cells in various diseases. Researchers will collect spleen tissue and blood from 100 adults undergoing planned splenectomy. By perfusing the spleen in the lab, they hope to uncover its role…