Infectious disease
Infections clinical trials
Bacterial, viral, and other infections — from common illnesses to emerging threats. We’re tracking 3,970 recruiting studies in this area right now.
By phase
- Not applicable2,551
- Phase 2357
- Phase 4302
- Phase 1286
- Phase 3282
- Phase 1/Phase 2132
- Phase 2/Phase 360
Top conditions
Leading sponsors
- National Institute of Allergy and Infectious Diseases (NIAID)88
- Assistance Publique - Hôpitaux de Paris69
- University of California, San Francisco39
- Johns Hopkins University30
- National Cancer Institute (NCI)28
- Hospices Civils de Lyon27
- Columbia University24
- University of Alabama at Birmingham23
- University of Oxford23
- University of Washington23
Where studies are running
- California232
- Maryland142
- Alabama93
- New York73
- Florida72
- Texas62
- Massachusetts57
- Arizona48
- Pennsylvania43
- Illinois40
Recruiting studies3,970 total
- NCT05959616RecruitingPhase 1
Study of controlled Shigella infection in Kenyan adults
This Phase 1 study gives a carefully measured dose of Shigella sonnei to healthy adults to learn about the infection’s safety and how the body responds. It may help researchers build safer future tests or treatments, but it requires a hospital stay and many follow-up visits.
KilifiAges 18–45 - NCT07159763RecruitingPhase 3
Study of a new medicine to prevent flu
This study tests a new type of flu prevention medicine (called a monoclonal antibody) given as an injection. It is for people at higher risk of getting the flu, including those with certain health conditions or weakened immune systems.
Anniston, AlabamaAges 12 years+ - NCT04573062Recruiting
Long COVID recovery study at the NIH
This study looks at how people recover from COVID-19 over time, including those with ongoing symptoms (Long COVID). It involves phone interviews and possibly in-person evaluations to understand long-term effects.
Bethesda, MarylandAges 18–100 - NCT05780450Recruiting
Brain stimulation for long covid headaches and pain
This trial tests a safe, non-invasive brain stimulation technique (transcranial direct current stimulation, or tDCS) to see if it can reduce persistent headaches and chronic pain in people with long covid. If you have ongoing pain after a confirmed covid infection, this could offer a new way to find relief.
Paiporta, ValenciaAges 16 years+ - NCT07109219RecruitingPhase 1/Phase 2
Study of AZD4512 alone or with other drugs for leukemia
This study tests a new medicine called AZD4512, given alone or with other cancer drugs, for people whose B-cell acute lymphoblastic leukemia (a type of blood cancer) has come back or not improved after treatment. The goal is to see if it can help control the disease.
Duarte, CaliforniaAges 12 years+ - NCT07663838RecruitingPhase 1
Vaginal treatment for bacterial vaginosis
This study tests a new vaginal treatment for bacterial vaginosis (BV), a common infection causing itching, odor, and discharge. It aims to see if the treatment is safe and works well.
Beijing, Beijing MunicipalityAges 18–50 - NCT06463886Recruiting
HIV medication support for Black women who have experienced trauma
This study tests a program to help Black women living with HIV take their HIV medication regularly, especially if they have had trouble staying on treatment or missed doctor visits. The program aims to empower women and improve their health.
Miami, FloridaAges 18 years+ - NCT07875595Recruiting
Immune markers for predicting problems after liver transplant
This study looks at blood markers of the immune system to see if they can predict complications after a liver transplant. It aims to help doctors personalize care and catch problems early.
Pilar, Buenos AiresAges 18 years+ - NCT07453069RecruitingPhase 2
Vaginal microbiome treatment for women with previous failed embryo transfer
This study tests a vaginal treatment (FB301) to see if it helps improve the balance of bacteria in the vagina before a frozen embryo transfer. It may help women who have had a prior failed frozen embryo transfer and have a specific type of vaginal bacterial imbalance.
Wichita, KansasAges 18–45 - NCT07875218Enrolling by invitation
Hepatitis B care within Zambia's HIV programme
This study looks at how to bring hepatitis B testing and care into the same clinics that already provide HIV services in Zambia. It aims to make it easier for people to get the hepatitis B help they need.
Lusaka, Lusaka ProvinceAges 18 years+ - NCT07645287RecruitingPhase 2
New HIV Combination Therapy for People on Biktarvy
This study tests a new HIV medication (GS-3242) combined with lenacapavir against your current Biktarvy regimen. Both are all-oral treatments for people whose HIV is well-controlled.
Phoenix, ArizonaAges 18 years+ - NCT07275580RecruitingPhase 4
Antibiotics before tooth removal for people with immune disorders
This trial tests whether taking preventive antibiotics before a simple tooth extraction helps prevent infections in people with weakened immune systems due to autoimmune diseases. It might help you avoid complications after your dental procedure.
São Paulo, São PauloAges 18 years+ - NCT06479837Recruiting
Study using tonsil tissue to understand infections
This study uses tonsil tissue that is removed during a routine tonsillectomy to grow tiny 'organoids' in the lab. Researchers will study how germs interact with human cells, which could lead to better treatments for infections.
Bethesda, MarylandAges 2–120 - NCT06366724RecruitingPhase 2
Life Improvement Trial for ME/CFS
This trial tests a new treatment for ME/CFS (chronic fatigue syndrome) that includes symptoms like dizziness when standing. It uses a smartphone app to track your progress and aims to see if the treatment can improve your daily life.
Boston, MassachusettsAges 18–70 - NCT07556107RecruitingPhase 4
Safety study of two antibiotics for serious hospital infections
This study watches how safely two common antibiotics (vancomycin and a combination called piperacillin/tazobactam) work together in hospitalized patients with serious infections. Researchers want to make sure the combination doesn't harm kidney function.
Worcester, MassachusettsAges 18 years+ - NCT07513285RecruitingPhase 2
Ibezapolstat pill for recurrent C. difficile infection
This trial tests a new oral antibiotic called ibezapolstat to treat recurrent C. difficile infection (CDI)—a serious diarrheal illness caused by bacteria in your gut. The study focuses on patients who have had multiple CDI episodes and may benefit from a different treatment approach.
Sacramento, CaliforniaAges 18–90 - NCT06990087RecruitingPhase 2
T-cell therapy for progressive multifocal leukoencephalopathy (PML)
This trial tests a T-cell therapy for people with PML, a rare brain infection. It aims to boost your immune system to fight the virus causing PML. You may be eligible if you have PML not caused by HIV, natalizumab, or certain recent treatments.
München, BavariaAges 18 years+ - NCT06113861Recruiting
Better TB testing for kids in Bolivia
This trial tests new ways to diagnose tuberculosis (TB) in children with breathing problems. It aims to make TB detection faster and more accurate for kids who might have the infection.
Santa CruzAges 2 months–14 years - NCT07861542RecruitingPhase 4
COVID-19 booster vaccine for older adults and high-risk people
This trial tests an updated COVID-19 booster vaccine designed to improve protection for people who are older or have health conditions that increase their risk of severe COVID-19. If you qualify, you would receive one dose of the study vaccine and be monitored for safety and immune response.
Fair Oaks, CaliforniaAges 12 years+ - NCT07683104Recruiting
How trisomy 8 autoinflammatory disease progresses over time
This study follows people who have trisomy 8 (an extra copy of a chromosome) that causes inflammation and mouth/genital ulcers, and their family members. Researchers want to learn how this condition changes over time, so they can better understand and treat it.
Bethesda, MarylandAges 1 day–99 years - NCT06679140RecruitingPhase 3
Study of Ibuzatrelvir for COVID-19 in high-risk patients
This trial tests if a new medicine called ibuzatrelvir can help people with COVID-19 who have certain health risks avoid severe illness. It is for patients who cannot or choose not to take another COVID-19 pill called Paxlovid.
Huntsville, AlabamaAges 12 years+ - NCT07838038Recruiting
COVID-19 vaccine reminder messages for Kaiser Permanente members
This study tests whether different email messages can encourage people to get the updated COVID-19 vaccine. If you join, you'll be part of a Kaiser Permanente program that sends you reminders to help you stay protected.
Pasadena, CaliforniaAges 18 years+ - NCT07766278Recruiting
Spotting urine infections with leftover urine samples
This study looks for better ways to spot urinary tract infections (UTIs) in young children and older adults by testing leftover urine samples. It doesn't test a new drug—it just collects extra urine to find new markers that could lead to faster, more accurate diagnosis in the future.
Belfast, Northern IrelandAges Any age - NCT05989802Recruiting
Testing new TB tests for children
This study is testing new ways to quickly diagnose TB in children under 15. It aims to find better tests that can be used at clinics, especially for kids who may not have obvious symptoms.
MaputoAges Up to 65 years
Common questions
- How many infections clinical trials are recruiting?
- Clin2 is tracking 3,970 recruiting infectious disease studies from the U.S. registry right now, out of 6,496 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.