Sexually transmitted disease

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 study compares two doses of the antibiotic ceftriaxone—500 mg versus 1000 mg—given as a single shot to treat uncomplicated gonorrhea. Researchers want to see if the lower dose works just as well, which could mean fewer side effects and less antibiotic use. The trial involves…

This study tests whether a program called SBIRT (Screening, Brief Intervention, and Referral to Treatment) can help people reduce risky alcohol and drug use. About 400 adults visiting family planning clinics will either get SBIRT or usual care. Researchers will track changes in d…

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 whether tinidazole, a drug already approved for other infections, can cure Mycoplasma genitalium in men with urethritis. About 40 men will take the medication and be checked 21 days later to see if the bacteria are gone. The goal is to find a new treatment option…

This study is testing two new blood test kits designed to diagnose syphilis. Researchers will collect blood samples from 1000 people, including those with symptoms, those at high risk, and healthy controls. The goal is to see how accurate these new kits are compared to standard l…

This study is testing whether a special menstrual pad, called the Q-Pad, can accurately detect high-risk HPV from menstrual blood collected at home. About 450 people who need a colposcopy after an abnormal Pap or HPV test will use the pad during their period and mail it to a lab.…

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 study will test whether screening pregnant women for chlamydia and gonorrhea can reduce the risk of preterm birth. About 2,000 women in Botswana will be randomly assigned to receive either standard care or additional STI testing early in pregnancy and again in the third trim…

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 combines peer navigation (trained community members) with mobile health tools to help gay, bisexual, and transgender people in rural Appalachia access HIV, STI, and hepatitis C testing and prevention services. About 141 participants will be split into two groups: one g…

This study tests whether taking the antibiotic doxycycline can prevent bacterial sexually transmitted infections (STIs) like chlamydia, gonorrhea, and syphilis in adolescent and young adult females. About 760 participants aged 13-29 who have had an STI in the past year and recent…

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 support service designed specifically for transgender women, men, and non-binary people in Thailand who have used chemsex drugs or other substances in the past year. The program offers HIV prevention (PrEP), mental health support, and STI care. Researchers will…

This study tests a program called Mobile Enhanced Prevention Support (MEPS) for people recently released from jail or prison who have substance use disorders. The program pairs participants with a peer mentor, offers cash incentives for using health services, and provides a smart…

This study tests whether taking the antibiotic doxycycline shortly after sex can prevent bacterial STIs like syphilis, gonorrhea, and chlamydia. It involves 200 men, transgender women, and travestis in Rio de Janeiro who are at higher risk. Participants choose whether to use doxy…

This study will follow 5,000 HIV-negative adults in Italy who are taking PrEP, a daily pill that prevents HIV. Researchers want to see how well PrEP works in real life, how many people stick with it, and what barriers they face. The goal is to use this information to improve HIV …

This study tests whether point-of-care STI tests, which give results in about 10 minutes, can speed up treatment for pregnant women compared to standard lab tests. About 756 pregnant women at Grady Memorial Hospital will either get the rapid tests or standard testing. The goal is…

This study tests a web-based app designed to help teenage boys and their doctors discuss sexual and reproductive health more easily. About 2,752 males aged 13-21 who have had sex will use the app before a clinic visit. Researchers will measure if the app improves condom use and r…

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 tests whether offering rapid point-of-care testing for gonorrhea and chlamydia helps more teens get HIV testing and PrEP. About 6,460 adolescents aged 16-24 will be compared: some get rapid testing, others get standard lab testing. The goal is to see if same-day result…

This study is testing whether the antibiotic doxycycline, already used to prevent bacterial STIs after sex, also changes inflammation levels and the natural bacteria in the body. Researchers will enroll 200 men, including those with HIV and those on PrEP, and measure immune marke…

This study follows 533 young women aged 18-22 to track sexually transmitted infections and the makeup of bacteria in the genital tract. Researchers want to see how these factors relate to infertility over time. Participants provide self-collected vaginal swabs, and no treatment i…

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 looks at how different menstrual products—tampons, cups, and pads—affect the bacteria and immune cells in the vagina. Researchers will collect samples from 300 women aged 18-49 to compare these groups. The goal is to understand if internal products like tampons and cup…

This study tests whether adding a tool called the Pleasuremeter to standard harm reduction services helps men who have sex with men and transgender people who use drugs or engage in chemsex talk about and improve their sexual pleasure. The goal is to see if people are willing to …

This study interviews 50 transgender adults in Thailand about their chemsex behaviors—reasons, patterns, and impacts—along with stigma and HIV prevention needs. Researchers also gather input from stakeholders to identify barriers and facilitators for creating transgender-friendly…

This study is gathering information from men who have sex with men who take part in chemsex (using drugs before or during sex) in Bangkok, Thailand. Researchers will survey party hosts and guests about their drug use, sexual health, mental health, and experiences of stigma. The g…

This study looks at whether using a digital sexual health survey in the emergency department helps doctors find more sexually transmitted infections (STIs) in teens aged 15-21. Researchers will compare STI detection rates when the survey is used versus standard care. The goal is …