Infectious disease
Infections clinical trials
Bacterial, viral, and other infections — from common illnesses to emerging threats. We’re tracking 4,173 recruiting studies in this area right now.
By phase
- Not applicable2,709
- Phase 2360
- Phase 4322
- Phase 1292
- Phase 3284
- Phase 1/Phase 2141
- Phase 2/Phase 365
Top conditions
Leading sponsors
- National Institute of Allergy and Infectious Diseases (NIAID)89
- Assistance Publique - Hôpitaux de Paris80
- University of California, San Francisco44
- Johns Hopkins University32
- Hospices Civils de Lyon30
- National Cancer Institute (NCI)28
- University of Washington27
- University Hospital, Strasbourg, France26
- Columbia University23
- University of Alabama at Birmingham23
Where studies are running
- California235
- Maryland147
- Alabama89
- New York77
- Florida74
- Texas61
- Massachusetts56
- Arizona46
- Pennsylvania45
- Illinois42
Recruiting studies4,173 total
- NCT07156084RecruitingPhase 4
HPV vaccine long-term effect study for young adults
This study checks if one dose of the 9-valent HPV vaccine given at ages 9-11 still protects you 6 years later. It is for people who only had that single dose and no other HPV shots.
Québec, QuebecAges 15–17 - NCT07304284RecruitingPhase 3
Cholera vaccine study for healthy adults and people with HIV
This trial tests a new cholera vaccine (Biovac OCV-S) to see if it works as well as the current vaccine (Euvichol-Plus). It is for healthy people aged 1 to 45, and also for adults with HIV who are on treatment.
Durban, Eastern CapeAges 1–45 - NCT07304349Recruiting
Study of rapid tests for Chagas diagnosis
This trial is testing new rapid diagnostic tests to detect infection with Trypanosoma cruzi, which causes Chagas disease. It aims to find faster ways to diagnose people who may be at risk, such as pregnant women, blood donors, or those with possible chronic infection.
Buenos Aires, Buenos AiresAges 10 months+ - NCT07328711RecruitingEarly Phase 1
Immunotherapy for chronic hepatitis B after HBsAg loss
This trial tests an immunomodulatory therapy for people with chronic hepatitis B who have already cleared the surface antigen (HBsAg) with a specific treatment. It aims to understand why some people achieve a cure and how to improve outcomes.
Beijing, Beijing MunicipalityAges 18–60 - NCT07295535Recruiting
Nasal immune responses to respiratory viruses in healthy and immunocompromised people
This study looks at how the nose's immune system responds to common respiratory viruses in both healthy people and those with weakened immune systems. It aims to understand how long these responses last.
Pavia, PaviaAges 18–90 - NCT07292584Recruiting
Digital toolkit to help women start PrEP
This trial tests a digital toolkit to help women start taking PrEP, a medication that prevents HIV. It looks at whether the toolkit makes it easier for women to take PrEP consistently.
Birmingham, AlabamaAges 18 years+ - NCT07293559Recruiting
Understanding infant feeding choices in women with HIV
This study looks at how women with HIV decide whether to breastfeed, and what support they get from healthcare providers and family. It aims to learn about their experiences and needs.
Los Angeles, CaliforniaAges Any age - NCT05728996Recruiting
Study of early HIV to guide future care
This study follows people with a very recent HIV infection and collects blood and other samples to learn more about the infection soon after it starts. It may help researchers better understand early HIV and improve future treatments.
Amsterdam, North HollandAges 18 years+ - NCT06510010RecruitingPhase 2
Chemo plus H. pylori treatment for advanced stomach cancer
This trial tests whether adding H. pylori bacteria treatment to standard chemotherapy (before and after surgery) can improve outcomes for people with locally advanced stomach cancer. It combines oxaliplatin and S-1 chemo with antibiotics to clear the infection.
GuangzhouAges 18–75 - NCT04552080RecruitingPhase 4
Antibiotics around sinus and bone graft implants to prevent problems
This trial studies whether taking antibiotics through the body (systemic antibiotics) after sinus-lift and bone-graft dental implant surgery can reduce post-surgery complications and improve patient comfort. It compares outcomes that matter to patients after implant placement using guided bone regeneration and a sinus floor elevation.
GrazAges 21 years+ - NCT07285096Recruiting
New quadruple therapy for H. pylori infection
This trial tests a combination of four medications to treat H. pylori, a bacteria that can cause stomach ulcers and other issues. The goal is to see if this newer therapy works well for people who are infected.
JinanAges 18–70 - NCT06926062Recruiting
Improving HPV vaccine communication in pharmacies
This study looks at whether training pharmacy staff in communication and vaccination workflows can improve HPV vaccine recommendations and uptake. If you are a parent or guardian of a child aged 9–17 who has not yet completed the HPV vaccine series, you may be eligible to participate.
University Park, PennsylvaniaAges 18 years+ - NCT07282782RecruitingPhase 4
Vancomycin for knee replacement surgery
This trial is testing the antibiotic vancomycin to prevent infections after total knee replacement. It may help if you are having your first knee replacement and are not severely overweight or diabetic.
San Diego, CaliforniaAges 18 years+ - NCT07172659RecruitingPhase 2
Study of Dovramilast for Leprosy Type 2 Reaction
This study tests a new medicine called dovramilast for people with leprosy type 2 reaction, a painful inflammatory condition that can cause skin bumps and nerve problems. It compares the study drug to standard care to see if it is safe and effective.
Seattle, WashingtonAges 18 years+ - NCT05121025Recruiting
Study of stomach bacteria and gut microbes in Helicobacter infection
This study looks at how stomach bacteria (Helicobacter pylori) interact with the normal microbes in your gut. You may be asked to provide tissue, stool, and blood samples to help researchers understand infection and the body’s response.
Freiburg im Breisgau, Baden-WurttembergAges 18 years+ - NCT06595979Recruiting
Testing antibiotics through a brain drain for hard-to-treat infections
This trial is for adults with a serious brain infection caused by drug-resistant bacteria. It tests giving an antibiotic (polymyxin B) directly into the brain through a drain tube to see if it works better.
Hangzhou, ZhejiangAges 18–75 - NCT06929962RecruitingPhase 4
VA dual sequential therapy for H. pylori gastritis
This trial tests a new two-step antibiotic treatment for adults with chronic gastritis caused by H. pylori bacteria. If you have not been treated for H. pylori before and are between 18 and 70, you may be able to join.
Nanjing, JiangsuAges 18–70 - NCT06046079Recruiting
HIV Prevention Service Use Study in Washington DC
This study looks at how people in the Washington, DC area use HIV prevention services. It focuses on those who are HIV-negative and either new to PrEP, taking daily PrEP pills, or getting long-acting injectable PrEP.
Washington D.C., District of ColumbiaAges 18 years+ - NCT04357600Enrolling by invitationPhase 1/Phase 2
Stem cell treatment for hepatitis B–related cirrhosis
This early-stage trial tests umbilical cord “mesenchymal” stem cells in people with liver scarring (cirrhosis) that is caused by hepatitis B. It may help improve liver function and related complications, but it is mainly designed to check safety and how well the treatment works.
Jakarta, DKI JakartaAges 18–65 - NCT01244802Enrolling by invitation
Study of immune memory after yellow fever vaccination
This study looks at how your immune system “remembers” the yellow fever vaccine over time. It may help researchers understand long-term immune protection and how it varies between people.
Decatur, GeorgiaAges 18 years+ - NCT00767312Enrolling by invitation
Study how HIV multiplies during HIV drug treatment
This study looks at how HIV continues to multiply (or stays suppressed) while you are taking antiretroviral therapy, using blood samples. It may help researchers better understand what HIV is doing during treatment and why some people experience changes like viral rebound.
Bethesda, MarylandAges 18–99 - NCT07053943Enrolling by invitation
Comparing single vs. multiple antibiotic doses for hip and knee replacement
This study compares two ways of giving antibiotics before hip or knee replacement surgery to see which one leads to fewer infections needing another surgery. It may help doctors choose the best antibiotic approach for patients having their first joint replacement.
Amsterdam, North HollandAges Any age - NCT07248904Recruiting
HPV education study for first-year nursing students
This study tests whether a special education program based on the transtheoretical model improves nursing students' knowledge about HPV, their health beliefs, and their intentions to get vaccinated. It aims to help students make informed decisions about HPV prevention.
Adana, CUKUROVAAges 18 years+ - NCT07601412Recruiting
Understanding Immune Response to Respiratory Viruses in Older Adults
This study examines how the body's natural defense system (specifically a type of immune protein) responds to common respiratory viruses like flu and cold in older adults. Researchers will analyze nasal samples that are already being collected as part of routine care to better understand why older people sometimes have different immune responses to these infections.
LyonAges 60 years+
Common questions
- How many infections clinical trials are recruiting?
- Clin2 is tracking 4,173 recruiting infectious disease studies from the U.S. registry right now, out of 7,061 we cover in this area in total.
- What does “Infections” cover here?
- Bacterial, viral, and other infections — from common illnesses to emerging threats. We group each study into infections based on the conditions it studies, so you can scan the whole therapeutic area at once and drill into a specific condition.
- How do I find a infections trial near me?
- Use the search to filter infections studies by location and eligibility. Every Clin2 trial page explains the criteria in plain English and offers a short, optional pre-screen for a fit read — the study team makes the final decision.
Other specialties
- Cancer
- Brain & nervous system
- Heart & circulation
- Hormones & metabolism
- Mental health
- Digestive system
- Lungs & breathing
- Immune system & allergy
- Women’s health & pregnancy
- Skin
- Blood & lymphatic
- Kidney & urinary
- Genetic & congenital
- Bones, joints & muscles
- Pain
- Injuries & trauma
- Mouth & dental
- Eyes & vision
- Ear, nose & throat
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov; specialty groupings are derived from each study’s conditions. Talk with your doctor about whether a specific trial is right for you.