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
- NCT05553652Recruiting
A probiotic test for repeat bladder infections
This trial studies ASTARTE™, a probiotic, to see if it can reduce repeat urinary tract infections (UTIs). It may help people who get UTIs often by testing whether the supplement lowers how frequently they come back.
Hvidovre, CopenhagenAges 18–40 - NCT05554068RecruitingPhase 2
Testing the shingles vaccine response after bone marrow transplant
This Phase 2 study looks at how well the shingles vaccine works in people who had an allogeneic (donor) stem cell transplant. It aims to measure the body’s immune response to the vaccine and check that it’s safe in this recovery period.
Maywood, IllinoisAges Any age - NCT05561504Recruiting
Study of stomach bacteria resistance in adults
This study looks at how common a stomach bacteria infection is and which antibiotics still work. You may help researchers by providing consent for related study participation and sample tracking.
MunichAges 18 years+ - NCT05562505Recruiting
Using ECMO to help you breathe, sit up, and come off a ventilator
This trial tests whether a heart-lung machine called venovenous ECMO can help people with severe breathing failure get less sedated, get extubated (have the breathing tube removed), and start moving. It’s for certain adults who are on a ventilator for a short time and have specific oxygenation problems.
Darlinghurst, New South WalesAges 18–65 - NCT05562323Recruiting
Study of immune response after monkeypox vaccination
This is an observational study that follows adults after they get a monkeypox vaccine to learn how their immune system responds. The results may help researchers understand what types of protection the vaccine creates.
Badalona, BarcelonaAges 18 years+ - NCT05565222RecruitingPhase 3
Testing two antibiotics as alternatives for ICU severe ESBL infections
This study compares two antibiotics—piperacillin-tazobactam or temocillin—to treat severe ICU infections caused by certain hard-to-treat gut bacteria (ESBL). It may help patients avoid the use of carbapenem antibiotics like meropenem when the bacteria are susceptible.
ParisAges 18 years+ - NCT05566392Recruiting
Studying long-term recovery in children after COVID-19
This study looks at how long “long COVID” affects children over time. It may help doctors better understand what symptoms last and what support could improve recovery.
TaipeiAges 6–18 - NCT05566483Recruiting
Study long COVID physiology and cardiopulmonary rehab effects
This study looks at how long COVID affects the body and whether cardiopulmonary rehabilitation improves quality of life and physical function. It may help participants better understand their symptoms and see if a structured rehab program improves daily abilities.
Aurora, ColoradoAges 18 years+ - NCT05571735Recruiting
COVID vaccine immune response study in people with tuberculosis
This study measures how strongly your immune system responds to COVID-19 vaccines. It includes people with newly diagnosed tuberculosis and a healthier comparison group, aiming to understand vaccine immune effects and safety.
Mae Ramat, Changwat TakAges 18 years+ - NCT05575401Recruiting
Track surgery results in kids getting tonsil removal
This trial looks at how well a specific throat surgery technique works in children who are having their tonsils removed (with or without removing adenoids). It may help improve how doctors choose and perform surgery for safer, better recovery.
Murrieta, CaliforniaAges 3–17 - NCT05576350Recruiting
Coaching to reduce risky drinking and HIV risk
This study tests an intervention (coaching/skills training) to help reduce risky alcohol use and reduce behaviors that increase HIV risk. It may help you if you drink in an at-risk way and may benefit from HIV prevention like PrEP.
New Haven, ConnecticutAges 18–35 - NCT05580458RecruitingPhase 1/Phase 2
Shingles vaccine study for adults with well-controlled HIV
This Phase 1/2 study tests how safe and how well a shingles (varicella zoster) vaccine works in adults living with HIV whose immune status is measured by CD4 count, plus a healthy comparison group. It may help researchers understand whether the vaccine can safely boost protection in people with HIV.
Bethesda, MarylandAges 18 years+ - NCT05580666RecruitingPhase 3
Lower death risk by adding azithromycin to HIV treatment
This Phase 3 study tests whether adding azithromycin helps people with advanced HIV disease live longer. You would start (or restart or adjust) HIV treatment within 4 weeks and may also receive azithromycin or a comparison approach to see if outcomes improve.
AbidjanAges 18 years+ - NCT05582512Recruiting
Study of long-term effects in children after COVID-19
This study looks at what long-term health effects children may have after getting COVID-19, and how those effects change over time. You may be asked to share health information and possibly complete a scan that can’t be done if certain metal is present.
Taipei, Chung Cheng DistrictAges Up to 18 years - NCT05582915Recruiting
Checking blood tests and scans to predict severe Bell’s palsy
This study looks for early “prognostic biomarkers” (measurable signs in blood/tissue or scans) to predict how severe Bell’s palsy will turn out. It may help doctors better choose the right treatment and follow-up for adults with severe facial nerve weakness.
MontpellierAges 18 years+ - NCT05583708RecruitingPhase 2
Trial tests targeted radiation plus immunotherapy after anti–PD-1 failure
This Phase 2 trial studies whether peptide receptor radionuclide therapy (targeted radiation) combined with immunotherapy (pembrolizumab) can shrink Merkel cell cancer after it has grown despite anti–PD-1/L1 treatment. It may help people whose cancer has specific receptors that make them eligible for the targeted radiation.
Iowa City, IowaAges 18 years+ - NCT05586282Recruiting
Study proteins that may worsen fluid leaks in shock
This trial studies specific body proteins to understand why fluid can leak from blood vessels during dangerous shock after infection or heart problems. If you (or your representative) qualify, your team will collect information and possibly samples to see whether these proteins relate to recovery and treatment response.
ParisAges 18 years+ - NCT05587894RecruitingPhase 2
Testing optimized COVID antiviral treatment in immunocompromised adults
This study tests the best combination and timing of antiviral medicines for people with COVID-19 who have weakened immune systems. It aims to improve outcomes in people with mild to moderate illness.
Bordeaux, BordeauxAges 16 years+ - NCT05588492RecruitingPhase 4
Rifamycin treatment to prevent TB after kidney transplant
This study looks at whether a rifamycin-containing medicine plan is safe and effective at preventing latent (hidden) TB after a kidney transplant. If your TB test shows you likely have hidden TB, you would be offered treatment to reduce the chance it becomes active TB.
TaipeiAges 20 years+ - NCT05590455RecruitingPhase 2
Testing a TNF-blocking drug to reduce death in HIV and TB meningitis
This Phase 2 trial studies whether a TNF-blocking medicine can lower the risk of death in people with HIV who also have TB meningitis. You would receive standard TB meningitis treatment plus the study drug, if you meet the criteria.
Rio de JaneiroAges 18 years+ - NCT05591924Recruiting
Bioinformatics study in adults with very early severe ICU illness
This trial studies how early severe illness in the ICU can be understood and tracked using health data (bioinformatics/informatics). It may help improve care decisions for people who arrive to the ICU soon after an emergency department visit.
London, OntarioAges 18 years+ - NCT05597280RecruitingPhase 3
Medicine given after exposure to prevent leprosy
This Phase 3 study tests whether taking preventive antibiotics after possible contact can stop leprosy from developing. If it works, it could protect people in affected communities from getting leprosy (and possibly related infections).
MoroniAges 2 years+ - NCT05600920RecruitingPhase 1/Phase 2
Long-acting IL-7 drug trial for low CD4 immune cells
This Phase 1/2 study tests a long-acting IL-7 medicine to raise low CD4 immune cells in people with idiopathic CD4 lymphopenia. Because this is a dose-escalation study, the goal is to check safety and see if the treatment affects immune cell levels.
Bethesda, MarylandAges 18–75 - NCT05602610Recruiting
Predicting relapse risk after visceral leishmaniasis
This study looks at a prognostic score to predict whether visceral leishmaniasis (VL) will come back after treatment. If you qualify, your information may help doctors estimate relapse risk and plan follow-up more safely.
GonderAges 12 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.