Infectious disease
Infections clinical trials
Bacterial, viral, and other infections — from common illnesses to emerging threats. We’re tracking 4,175 recruiting studies in this area right now.
By phase
- Not applicable2,709
- Phase 2361
- Phase 4321
- Phase 1292
- Phase 3286
- 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
- California237
- Maryland147
- Alabama89
- New York77
- Florida74
- Texas61
- Massachusetts56
- Arizona46
- Pennsylvania45
- Illinois42
Recruiting studies4,175 total
- NCT05257538Recruiting
Stool transplant to treat early C. difficile infection
This trial tests whether giving a stool transplant (also called FMT) can treat a new, early C. difficile infection in people who have improved while on antibiotics. It may help some people prevent the infection from coming back or worsening.
TurkuAges 18–120 - NCT05261139RecruitingPhase 3
Trial for PF-07321332 for children at risk from COVID-19
This trial studies whether PF-07321332 (with ritonavir) helps children under 18 who have COVID-19 at home but are at high risk of severe illness. It looks at whether starting treatment early can reduce progression to worse disease.
Phoenix, ArizonaAges birth–17 years - NCT05262010RecruitingPhase 3
HPV vaccine study for Chinese women, ages 9–45
This trial tests an 11-type HPV vaccine to prevent infection from multiple HPV strains. If you enroll, you’ll receive scheduled vaccine doses and have health and gynecologic check-ins to see how well the vaccine works and is tolerated.
Hechi, GuangxiAges 18–45 - NCT05266092Recruiting
Study kidney disease immune system activity in dialysis patients
This study looks at how the body’s defense systems (immune system and related signals) behave in people with chronic kidney disease. It may help doctors understand what is driving inflammation and related complications in dialysis patients.
OdenseAges 18 years+ - NCT05266807RecruitingPhase 3
Capsule fecal transplant to prevent C. difficile coming back
This study tests whether taking a capsule form of fecal microbiota transplant (FMT) can help adults with their first C. difficile infection—or a first relapse—get better and reduce repeat episodes. Participants also take specific antibiotics for C. difficile as part of the study process.
Basel, BaselAges 18 years+ - NCT05266222Recruiting
Collecting respiratory virus samples for a research library
This study collects samples from people who have or might have a cold/respiratory virus, then stores them for future research. It may help researchers better understand respiratory germs and develop better treatments.
Bethesda, MarylandAges 3 years+ - NCT05266898RecruitingPhase 4
HPV vaccine response study for people living with HIV
This trial studies how well the Gardasil-9 HPV vaccine triggers the body’s immune response in people living with HIV. It may help doctors understand the best way to protect against HPV-related cancers and infections in this population.
New Orleans, LouisianaAges 18–65 - NCT05268523Recruiting
Online self-management program for long COVID symptoms
This trial tests an online self-management program to help people cope with long COVID symptoms in everyday life. It may help if you’re struggling with ongoing symptoms like mood changes, memory/thinking issues, or physical problems after COVID.
Toronto, OntarioAges 18 years+ - NCT05271669Recruiting
Study of COVID-19 immunity over time
This study looks at how people’s immune protection after COVID-19 may change over time. It aims to better understand immunity, which could help doctors plan future care and prevention.
Hong Kong, HONG KONGAges Any age - NCT05275335Recruiting
Study how germs in burn wounds are best identified
This study compares two ways of finding germs (microbes) in burn wounds: traditional tissue swabs/cultures versus a newer DNA-based method. It may help improve how clinicians understand burn infections and tailor care.
Galveston, TexasAges 18–100 - NCT05281809RecruitingPhase 2
CAR T-cell therapy made locally for B-cell blood cancers
This Phase 2 trial tests a locally manufactured CAR T-cell treatment for certain B-cell lymphomas and B-ALL that have limited treatment options left. It may help your immune system attack cancer cells that carry the CD19 marker, potentially as a bridge to transplant for some patients.
Pittsburgh, PennsylvaniaAges 18–79 - NCT05282095Recruiting
Study how HPV changes affect outcomes in CIN2
This study follows women with an early abnormal cervix cell change (CIN2/CIN2-3) to see how HPV DNA “integration” relates to whether the condition improves or worsens. It may help doctors better predict prognosis and guide safer monitoring, especially if you want to become pregnant.
Fuzhou, FujianAges Up to 45 years - NCT05284877Recruiting
Study of HPV and skin cancer after organ transplant
This study looks at how human papillomavirus (HPV) and skin cancer behave in people who have had a solid organ transplant. It also includes healthy people for comparison, to understand what might be different after transplant and immune medicines.
Copenhagen NV, Capital RegionAges 18 years+ - NCT05285735Recruiting
Safety study for IV artesunate during pregnancy
This study follows people who were pregnant while receiving IV artesunate to better understand the treatment’s safety for both the mother and the baby. It does not test a new treatment—it collects safety information from real-world care.
Piscataway, New JerseyAges 15–100 - NCT05286931Recruiting
Test for gonorrhea using a urine swab lab assay
This study checks whether a specific lab test (the “gyrA assay”) can detect gonorrhea in people who do not have symptoms. It may help clinicians find gonorrhea more quickly and with the right treatment when symptoms aren’t present.
Seattle, WashingtonAges 18 years+ - NCT05291676RecruitingPhase 2
Study how vaccines work in aging and frailty adults
This trial studies how well your immune system responds to a vaccine in people who are younger adults or, especially, older adults and those with frailty. Your participation may help researchers understand why vaccine responses can differ with age.
New Haven, ConnecticutAges 21 years+ - NCT05291845RecruitingPhase 2
Vaccine study for treating multiple common skin warts
This Phase 2 study tests giving a Candida antigen plus a bivalent HPV vaccine to help shrink or clear multiple common skin warts. It may help people with warts on different body areas, with different sizes or how long they’ve had them.
Zagazig, Al SharqiaAges 9 years+ - NCT05293366Recruiting
Long COVID study testing supportive care for multiple body systems
This study looks at people who have recovered from COVID-19 but still deal with long-term problems. It aims to better understand (and potentially help with) ongoing issues that can affect hormones, metabolism, mood, muscles, the heart, lungs, and skin.
NaplesAges 18 years+ - NCT05300035RecruitingPhase 2
HIV treatment add-on antibodies during early infection
This study tests whether adding two antibody medicines to standard HIV treatment helps people control HIV better after stopping treatment. It focuses on people with recently diagnosed (“primary”) HIV infection, aiming to improve long-term control after ART is interrupted.
BobignyAges 18–70 - NCT05302531RecruitingPhase 1
Testing high-absorption antibiotics for short-bowel syndrome
This early (Phase 1) study tests how well certain antibiotics get absorbed in the body when you have short-bowel syndrome. It may help doctors choose antibiotics that work better through the mouth for people with this digestion problem.
Vandœuvre-lès-Nancy, LorraineAges 18 years+ - NCT05303337Recruiting
Study of gut and HIV changes after switching to long-acting shots
This trial compares how HIV “reservoirs,” inflammation, and the gut microbiome change when people switch from daily HIV pills to long-acting injectable treatment. It may help you and your team understand what to expect with the switch and how your body responds.
MarseilleAges 18 years+ - NCT05303805RecruitingPhase 4
Sevoflurane gel for painful, slow-healing leg ulcers
This trial studies a topical (skin-applied) form of sevoflurane to help painful leg ulcers that are not healing on their own. If you have ongoing ulcer pain and can report it reliably, you may be considered for this treatment study.
PragueAges 18 years+ - NCT05304234RecruitingPhase 2
Testing ways to detect liver cancer risk in Native patients
This Phase 2 study focuses on people at higher risk for liver cancer due to liver scarring or chronic hepatitis B. It may help improve screening and outcomes for American Indian and Alaska Native people who could benefit from closer monitoring.
Tahlequah, OklahomaAges 18–75 - NCT05304221Recruiting
Test an electronic tool to calculate antibiotic resistance
This trial checks whether an electronic “resistance calculator” helps clinicians choose antibiotics for adults hospitalized with suspected sepsis. It compares outcomes when hospitals use the tool versus usual practice to see if antibiotic decisions improve care.
Be’er Ya‘aqovAges 18 years+
Common questions
- How many infections clinical trials are recruiting?
- Clin2 is tracking 4,175 recruiting infectious disease studies from the U.S. registry right now, out of 7,076 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.