Gram-negative bacterial infections

This study tested whether a 14-day course of doxycycline pills works as well as the standard penicillin shot for curing early syphilis. About 200 adults with early-stage syphilis took part. The goal is to offer a reliable oral option, especially when penicillin is in short supply…

This study tests a hexavalent vaccine that protects against six diseases, including polio, but uses a lower dose of the inactivated polio vaccine (IPV). The goal is to see if this reduced-dose version works as well as the standard full-dose vaccine in infants. Around 1,500 health…

This completed study tracked over 10,000 people in Thailand who received the Boostagen® vaccine, which protects against tetanus, diphtheria, and whooping cough. Healthcare workers reported any side effects to see how safe the vaccine is in everyday use. The study also looked at p…

This study tested a higher dose of a new nasal vaccine (BPZE1) for whooping cough in 54 healthy adults aged 18-32. The goal was to see if the higher dose is safe and helps the vaccine take hold in the nose to trigger protection. Researchers monitored side effects and checked if t…

This completed study checked the safety of the Hexaxim vaccine in 713 infants aged 2 months and older in South Korea. Researchers tracked side effects like injection site reactions, fever, and crying after routine vaccination. The goal was to confirm the vaccine's safety in every…

This study tested a new vaccine called BK1310 in 370 healthy infants to see if it safely protects against several serious diseases: Hib, diphtheria, pertussis, tetanus, and polio. The vaccine was compared to existing vaccines. The goal was to check how well the infants' immune sy…

This study tested a new vaccine called BK1310 in 267 healthy infants to see if it protects against tetanus, diphtheria, pertussis, polio, and bacterial meningitis as well as existing vaccines. Infants received three doses, and researchers measured their immune responses. The goal…

This study tested a booster dose of the DTaP vaccine (BK1301) in 446 adolescents aged 11-12 who had already received the standard childhood series. The goal was to confirm the vaccine boosts immunity against diphtheria, tetanus, and pertussis (whooping cough) safely. Results show…

This early-stage study tested a new whooping cough vaccine given as a nasal spray. 48 healthy adult men received either the vaccine or a placebo to check safety and immune response. The goal is to develop a single-dose vaccine that can protect infants from birth, before they get …

This study tested a new whooping cough vaccine called BPZE1, given as a nasal spray, in healthy children aged 6 to 17. The goal was to see if it is safe and helps the body fight off whooping cough, either alone or with the standard shot vaccine Boostrix. About 368 children took p…

This study tested a new combination vaccine called Shan6™, which protects against six diseases (diphtheria, tetanus, whooping cough, hepatitis B, Hib, and polio) in healthy infants and toddlers in Thailand. The trial involved 460 participants and compared Shan6™ to a similar 5-in…

This phase 3 trial investigates whether the antibiotic linezolid can cure yaws, a bacterial skin infection that causes ulcers, as effectively as the standard treatment azithromycin. The study involves 384 children aged 5 to 18 with confirmed yaws. Participants receive either line…

This study compared two common antibiotics—azithromycin (single dose) and doxycycline (7-day course)—for treating anal chlamydia in women who also had a vaginal chlamydia infection. The goal was to see which treatment clears the anal infection better, since anal chlamydia often g…

This study tested different combinations of the acid-blocker tegoprazan with antibiotics to treat H. pylori, a common stomach infection. 640 adults who had never been treated before received one of several drug regimens for 14 days. The goal was to see which combination worked be…

This completed study tested whether a new drug called keverprazan, combined with the antibiotic amoxicillin, can effectively treat a first-time H. pylori infection in adults. 264 participants took either keverprazan or esomeprazole (a standard acid reducer) plus amoxicillin for 1…

This study tested a two-drug combination—tegoprazan (a stomach acid blocker) and amoxicillin (an antibiotic)—to treat H. pylori infection, a common stomach bug that can cause ulcers. The trial enrolled 50 adults who had not been treated for H. pylori before. The goal was to see i…

This study tested whether the antibiotic tigecycline works better than the standard drug doxycycline for scrub typhus, a bacterial infection spread by mites. Thirty-one hospitalized patients were randomly assigned to receive either tigecycline or doxycycline. Researchers measured…

This completed phase 4 trial tested whether taking doxycycline for 3 days works as well as the usual 7-day course for treating chlamydia. About 526 men and women with confirmed chlamydia took either a 3-day or 7-day regimen, with placebo pills used to keep the study blinded. Part…

This study looked at whether it is safe to stop giving annual azithromycin to communities with low levels of trachoma, an eye infection that can cause blindness. Over 3,900 people in Niger took part. Researchers compared stopping treatment after at least 5 years versus continuing…

This study tested whether injecting the antibiotic gentamicin directly into swollen lymph nodes helps people with cat scratch disease recover faster. 75 participants received either the injection or a placebo, along with standard oral antibiotics. The goal was to see if the injec…

This study tested different doses of the antibiotics minocycline and metronidazole, combined with bismuth and a stomach acid blocker, to treat Helicobacter pylori infections that didn't clear with previous treatments. 480 adults who had failed earlier therapy were randomly assign…

This study tested whether a steroid eye drop (fluorometholone) given for four weeks after trachoma surgery could stop eyelashes from growing back and rubbing against the eye. Over 2,400 people aged 15 and older took part. The goal was to see if this simple, low-cost addition to s…

This study looked at 121 people with heart disease who were getting a stent. Researchers checked if they also had a silent H. pylori stomach infection and whether treating that infection reduced stomach symptoms or bleeding. The goal was to see if eradicating the bug helps patien…

This study tested two different drug combinations to treat Helicobacter pylori, a stomach infection that can cause ulcers. About 400 adults took either a two-drug regimen (tegoprazan and amoxicillin) or a four-drug regimen (including bismuth and furazolidone). The goal was to see…

This study tested whether a two-drug combination (vonoprazan plus either amoxicillin or doxycycline) works as well as the standard four-drug bismuth quadruple therapy for eradicating H. pylori infection. 579 adults with H. pylori took one of three 14-day treatments. Researchers m…

This study looked at how the antibiotic cefiderocol works in hospitalized infants under 3 months old with suspected or confirmed gram-negative bacterial infections. Researchers measured drug levels in the blood and checked for side effects in 30 babies. The goal was to find the r…

This study tested the safety and how the body processes the antibiotic cefiderocol in hospitalized children aged 3 months to 18 years with serious bacterial infections. The goal was to see if the drug is safe and how it works in the body. 53 children participated, and the study i…

This study tested a 14-day treatment using two drugs (vonoprazan and amoxicillin) against a more complex seven-then-seven-day regimen for H. pylori infection in 337 adults in Taiwan. The goal was to see if the simpler dual therapy works just as well, with fewer side effects and e…

This study tested whether adding a traditional Chinese herbal formula (Banxiaxiexin decoction) to standard antibiotics can better treat H. pylori infection and related indigestion. 104 adults with both conditions took either the herbal combo or standard therapy for 14 days. The m…

This study tested whether a yogurt containing LG21 probiotics can clear H. pylori infection in children aged 4-6. 140 kids were split into two groups: one ate the yogurt daily for 12 weeks, the other got no treatment. The main goal was to see if the yogurt could turn a positive s…

This study tested a new antibiotic called MK-7655A in 115 children from birth to 18 years old who had serious bacterial infections. The goal was to see if the drug is safe and works better than standard treatments. Children were randomly assigned to receive either the new drug or…

This study tested whether a simpler two-drug treatment (tegoprazan and amoxicillin) works better than the standard four-drug therapy for eradicating H. pylori, a bacteria that can cause stomach ulcers. 370 adults with H. pylori infection were randomly assigned to one of the two t…

This completed study in Laos tested over 1,200 adults for H. pylori, a stomach bacteria linked to cancer. Those infected received a 14-day course of antibiotics and acid-reducing medication. The study also screened high-risk participants for early signs of stomach cancer. The goa…

This study looked at 508 adults with H. pylori infection to see if a 7-day triple therapy (vonoprazan, amoxicillin, tetracycline) works as well as a 14-day dual therapy (vonoprazan, amoxicillin). The goal was to compare how often the infection is cleared and how many side effects…

This study tested two different 14-day drug combinations to treat Helicobacter pylori, a bacteria that causes stomach inflammation and ulcers. Over 750 adults were randomly assigned to either a triple therapy (omeprazole, amoxicillin, clarithromycin) or a quadruple therapy (omepr…

This study tested whether a new triple therapy containing DWP14012 is as good as the standard treatment for eradicating H. pylori, a bacteria that can cause stomach ulcers. 461 adults with confirmed H. pylori infection took part. The main goal was to see if the infection was gone…

This study looked at whether giving hospital-level care to acutely ill adults in their own homes in rural areas works well. 160 people with various conditions like infections, heart failure, or COPD took part. The goal was to see if this approach could lower costs and help patien…

This study tested a new booster vaccine called DTaPgen in 290 healthy toddlers aged 15 to 36 months. The goal was to see if it works as well as a currently licensed vaccine to protect against whooping cough, diphtheria, and tetanus. Children received a single shot, and researcher…

This study tested two different drug combinations in 782 people with H. pylori infection that was resistant to the antibiotic clarithromycin. One group received a triple therapy with a proton pump inhibitor, amoxicillin, and metronidazole, while the other received a quadruple the…

This study tested whether a three-drug combination containing rifabutin can wipe out Helicobacter pylori infections that didn't respond to earlier treatments. 360 adults who had failed prior therapy were randomly assigned to one of three regimens. The goal was to see which approa…

This study looked at whether treating Helicobacter pylori (a common stomach infection) with antibiotics can raise platelet counts in people with immune thrombocytopenia (ITP), a condition where the immune system destroys platelets, causing bleeding and bruising. Researchers enrol…

This study compares a new rapid point-of-care test for chlamydia, gonorrhea, and mycoplasma genitalium to standard lab testing. The goal is to see if the faster test helps doctors give the right antibiotics on the same day, reducing unnecessary or missed treatments. Participants …

This study looked at how well a new, quick finger-prick test (LumiraDx CRP) measures CRP levels compared to a standard lab test. CRP is a marker of infection, inflammation, or tissue injury. 79 adults with symptoms of these conditions took part. The goal was to see if the new tes…

This study tested a new molecular test (iiPCR) to diagnose scrub typhus, a bacterial infection spread by mites. Researchers compared the test's accuracy against standard methods in 345 participants in Thailand. The goal was to see if this tool could provide faster, reliable diagn…

This study compared two methods for diagnosing H. pylori infection: the rapid urease test (a simple, cheap test done during endoscopy) and a newer molecular test (PCR) that can also detect antibiotic resistance. Researchers enrolled 100 adults who needed an endoscopy. The goal wa…

This study tested three rapid, point-of-care HIV tests to see how well they work compared to standard lab tests. Researchers enrolled 224 adults at high risk for HIV in Baltimore. The goal was to see if faster results help more people start treatment or prevention the same day.

This study tested a rapid fingerstick test that checks for both HIV and syphilis at the same time in pregnant women visiting prenatal clinics in Guatemala. The goal was to see if this quick, on-the-spot screening would lead to more women being diagnosed and treated during pregnan…

This study checked how well a new rapid test (Reveal TP) detects syphilis compared to standard lab tests. About 600 adults visiting a Vancouver STI clinic took part. The goal was to see if the quick finger-prick test is accurate enough for routine use.

This early study tested whether a special PET scan using a radioactive form of vitamin B9 (11C-PABA) can help doctors see infections deep inside the body. Researchers scanned 13 healthy people and patients with known or suspected infections. The goal was to see if this method can…

This study looked at better ways to screen teenagers (ages 15-21) for chlamydia and gonorrhea when they visit emergency departments. Researchers compared offering STI tests to everyone versus only to those with certain risk factors. The goal was to find the most effective and cos…

This study tested a strategy of using rapid, point-of-care diagnostic tests for sexually transmitted infections (STIs) in pregnant women attending antenatal clinics in Zimbabwe. Over 1,000 women were offered testing for chlamydia, gonorrhea, trichomoniasis, syphilis, and hepatiti…

This trial evaluates whether a hospital-based remedial vaccination strategy can improve Tdap-IPV (tetanus, diphtheria, pertussis, polio) vaccination rates in adults aged 65 and older in the Sarthe region of France. Participants are randomly assigned to receive either the remedial…

This study looked at how well the whooping cough (pertussis) vaccine works in pregnant women with and without HIV, and whether it is safe for them and their babies. Over 500 pregnant women received the vaccine during their second or third trimester. Researchers measured antibody …

This study tested a pop-up clinic inside a van for women who inject drugs and exchange sex in north Seattle. The goal was to see if offering HIV prevention pills, addiction medications, and quick STI testing in a convenient location would help more women start and stay on these t…

This study tested a mobile program called Comunică to help Romanian gay and bisexual men reduce HIV risk and heavy drinking. 300 participants used their phones or laptops to complete surveys and eight one-hour sessions with a counselor or by reading health information. The progra…

This study tested whether a probiotic called Bifidobacterium breve PRL2020 could reduce stomach issues like diarrhea in 121 children aged 3-12 who were taking amoxicillin antibiotics. The children took the probiotic alongside their antibiotic treatment. The goal was to see if it …

This study looked at 335 adults hospitalized with bacterial infections to see if taking NSAIDs (like ibuprofen) before admission made their infections more severe. Researchers compared those with complicated infections (abscesses, needing surgery) to those with simpler infections…

This completed phase 1 study tested whether giving healthy adults a controlled dose of whooping cough bacteria via nasal spray can safely cause mild infection. The goal was to establish a human infection model for future vaccine and treatment research. 79 participants aged 18-40 …

This study looked at health records from over 5,000 adults to see if having an H. pylori stomach infection is linked to metabolic syndrome—a cluster of conditions like high blood sugar, high blood pressure, and excess belly fat. Researchers compared people with and without the in…

This completed study looked at 59 men who have sex with men and use methamphetamine. Researchers used a program that gives rewards for drug-free urine samples to help them cut back. They measured inflammation in the rectum and tracked STI/HIV risk behaviors over 8 weeks. The goal…

This large study in rural Ethiopia looked at whether providing clean water, sanitation, and face-washing education can reduce trachoma infections in communities that have already received many rounds of antibiotics. Over 47,000 people from 40 communities took part. The goal is to…

This study looked at health insurance records of over 81,000 people aged 14 to 44 in Germany to see how often chlamydia leads to serious health problems like infertility or pelvic disease, and how much it costs the healthcare system. Researchers tracked infections, complications,…

This study looked at 7,227 patients in Nanjing to understand how resistant the H. pylori bacteria is to common antibiotics. The goal was to find out which antibiotics still work best and to help doctors choose the right treatment for each patient. No new treatments were tested; i…

This study aimed to find the best dose of the antibiotic ceftazidime for critically ill children with severe burns. Researchers took blood samples from 3 children to measure how the drug moves through the body. The goal was to learn how to personalize dosing to improve treatment …

This study examined whether giving ICU patients the same antibiotic they had before, versus a different one, affects the development of drug-resistant bacteria. Researchers looked at 197 adults with Gram-negative infections. The goal was to understand how antibiotic choice impact…

This study looked at 42 adults with both H. pylori infection and small intestinal bacterial overgrowth (SIBO). Researchers used advanced DNA and chemical tests on stool samples to map the types of gut bacteria and their byproducts. The goal was to better understand how these two …

This study looked at 197 ICU patients with bloodstream infections caused by carbapenem-resistant bacteria (superbugs). Researchers used machine learning to analyze patient data and predict which patients were at higher risk of dying. The goal is to create a tool that helps doctor…

This study looked at 100 adults with H. pylori infection to find out which antibiotics the bacteria are resistant to and which harmful genes they carry. Researchers took stomach biopsies during endoscopy to test the bacteria and also asked about diet and medication use. The goal …

This early-phase study tested a single dose of the antibiotic omadacycline (Nuzyra) in 23 children aged 8 to 17 who were hospitalized with bacterial infections. Researchers measured how the drug moved through the body and checked for side effects. The goal was to gather safety an…

This study looked at whether antibiotics for H. pylori (a stomach infection) change the natural bacteria in the vagina. Researchers followed 73 women getting treatment and 10 healthy women. They collected vaginal samples before and after treatment to see if the bacteria mix shift…

This completed study looked at the safety of the VacPertagen whooping cough vaccine in over 5,400 people in Thailand, including pregnant women and their newborns. Healthcare workers reported any side effects after vaccination using standard forms. The goal was to catch any unexpe…

This study looked back at medical records of 3000 people treated for H. pylori infection to see how often treatment actually works outside of controlled trials. Researchers collected data on which treatments were used and what factors, like antibiotic resistance or patient habits…

This study tested a new imaging technique using a radioactive tracer called 11C-trimethoprim to see how it spreads in the bodies of 16 adults with suspected bacterial infections. Participants had PET/CT scans to track the tracer over time. The goal was to learn how the tracer beh…

This completed study looked at 200 women and their infants to understand how the whooping cough vaccine given during pregnancy affects the baby's immune protection. Researchers measured antibody levels in mothers and in umbilical cord blood at birth, as well as in infants after t…

This study tested whether three new diagnostic tools could help doctors pick the best antibiotic faster for ICU patients with Gram-negative bloodstream infections. Researchers compared standard lab methods to the new tests in 100 patients. The goal was to see if more patients got…

This early-stage study tested a single dose of the antibiotic TQD3524 in 48 people with varying degrees of kidney function. The goal was to see how the drug moves through the body and is removed, especially by the kidneys, and to check for any safety issues. The study did not aim…

This study looked at how a new drug called linaprazan glurate interacts with common antibiotics (clarithromycin, amoxicillin) and bismuth in 56 adults. Some participants were healthy and H. pylori-negative, while others had H. pylori infection. The goal was to measure drug levels…

This study looked at 300 people to see if a common stomach infection, H. pylori, is linked to unhealthy blood fat levels that can lead to heart disease. Researchers measured triglycerides and 'good' cholesterol to calculate a heart risk score. The goal is to understand if treatin…

This study looked at whether a specific gene (TLR9) influences how children's bodies react to H. pylori, a bacteria that can cause stomach pain and inflammation. Researchers compared 50 infected children with 50 uninfected children, all aged 1 to 18, using endoscopy and genetic t…

This study compared a generic vonoprazan 20 mg tablet to the brand-name Voquezna in 28 healthy adults. Participants took a single dose of each under fasting conditions to see if the generic releases the same amount of drug into the bloodstream. The goal was to check bioequivalenc…

This study looked at 156 critically ill patients to find out what factors help achieve the right levels of beta-lactam antibiotics in the blood. Researchers collected clinical data and used therapeutic drug monitoring to see which patients reached target concentrations. The goal …

This study tested whether a pay-it-forward approach—where one person's donation covers testing for the next person—could increase gonorrhea and chlamydia testing among men in China. Over 1,200 men who had sex in the past year but hadn't been tested recently took part. The goal wa…

This study tested over 1,000 people in Bhutan for H. pylori, a stomach infection that can lead to stomach cancer. Researchers measured infection rates and stomach damage to understand the problem and plan a national prevention program. Participants were from rural villages, and t…

This study tested special wearable pumps (elastomeric pumps) to give antibiotics through a drip to hospital patients. Nine adults with bacterial infections took part to see if the pumps are safe, easy to use, and could save time and money compared to traditional methods. The goal…

This study followed 603 pregnant women in South Africa to see if infections or bacteria in the vagina are linked to how early they give birth. Researchers tested for sexually transmitted infections, yeast, and other germs at the start of pregnancy and again at 30-34 weeks. The go…

This study looked back at medical records of 1,730 adults with H. pylori infection who received bismuth-containing quadruple therapy as their first treatment. Researchers compared how well different drug combinations worked and what side effects occurred. The goal was to identify…