Chlamydia trachomatis infectious disease

This study tested two different approaches to help people recently released from jail or prison get connected to care for HIV, hepatitis C, STIs, and opioid use disorder. Over 600 adults took part. The goal was to see which method worked better for starting and staying on treatme…

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 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 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 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 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 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 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 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 study tested two strategies to prevent sexually transmitted infections (STIs) in men who have sex with men and already take HIV PrEP. One group took doxycycline pills after unprotected sex, and another group received a meningitis vaccine (Bexsero). The goal was to see if the…

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 whether a personal helper (a systems navigator) could help heterosexual men in Malawi keep taking HIV prevention medication (PrEP). 199 men who were getting care for sexually transmitted infections took part. The navigator provided support and reminders to help …

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 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 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 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 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 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 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…