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
- NCT04310787Recruiting
Tracking outcomes in adults with hepatitis B liver failure
This study looks at long-term survival in people ages 18–65 who are hospitalized with hepatitis B–related acute-on-chronic liver failure. It may help doctors better predict prognosis and improve care for people with this serious condition.
Guangzhou, GuangdongAges 18–65 - NCT04310930RecruitingPhase 2/Phase 3
Find the best treatment plan for a lung infection
This study looks for the best way to treat Mycobacterium abscessus (MABS), a difficult lung infection. You may join a treatment group, or first join an observation group and possibly move into treatment later if you meet the criteria.
Kogarah, New South WalesAges Any age - NCT04318366Recruiting
Study of COVID-19 samples and how patients respond to treatment
This trial collects and studies COVID-19 test results and other patient information to better predict treatment response and outcomes. Your sample(s) help researchers understand who may improve, worsen, or need different care.
Milan, LombardyAges 18 years+ - NCT04319367RecruitingPhase 2
Antibody treatment added to HIV meds for early HIV
This Phase 2 trial tests whether adding long-acting HIV antibodies to standard HIV treatment (ART) can help control HIV in people who started ART soon after getting infected. It also checks how safe the antibody treatment is and how well it works over time.
AarhusAges 18–60 - NCT04320732Recruiting
Study COVID-19 spread at home and work
This study looks at what factors make COVID-19 spread more easily in the community and workplace. It may help researchers understand how to reduce transmission in everyday settings.
OsloAges 18 years+ - NCT04323904Recruiting
Hantavirus registry for people with kidney or lung symptoms
This study is a registry, meaning it collects health information and possibly test results from people who have evidence of hantavirus infection along with specific illness symptoms. It may help researchers better understand how hantavirus affects the kidneys or the heart/lungs (and how to recognize it).
Cologne, North-Rhine WestfaliaAges Any age - NCT04327570Recruiting
Study of immune responses in hospitalized COVID-19 patients
This study looks closely at how your immune system responds during COVID-19. It may help researchers better understand why COVID-19 varies from person to person and how to improve future care.
LeuvenAges 18 years+ - NCT04330287Recruiting
Study of heart health in adults aging with HIV
This study looks at how aging affects heart health in people who have HIV. It may help researchers find better ways to prevent or monitor heart problems over time.
Essen, NordrheinwestfalenAges 18 years+ - NCT04330521Recruiting
Cancer patients share experiences during the COVID-19 outbreak
This study asks adult cancer patients to complete a survey and talk in an interview about how COVID-19 affected their care and daily life. Your answers may help researchers understand what challenges cancer patients faced during the pandemic.
Stanford, CaliforniaAges 18–99 - NCT04335383Recruiting
Study blood antibodies for a Pseudomonas-targeting treatment
This study looks at people’s blood to see if they already have antibodies that recognize Pseudomonas aeruginosa, a type of bacteria. If you qualify for the prospective part, they may collect blood samples at Grenoble University Hospital and use your results to support future treatment testing.
GrenobleAges 18 years+ - NCT04339777RecruitingPhase 2
Bone marrow transplant for inherited immune system disorders
This trial studies how well a donor bone marrow (stem cell) transplant works for people with inherited immune system problems (called immune deficiencies). It’s for patients who haven’t improved with usual treatment or don’t have another good option.
Bethesda, MarylandAges 4–69 - NCT04341155RecruitingPhase 2
Dexamethasone treatment for brain toxoplasmosis in people with HIV
This Phase 2 trial studies whether dexamethasone (a strong anti-inflammatory steroid) helps treat brain toxoplasmosis in adults with HIV. It looks at people who have symptoms and brain scan findings that fit cerebral toxoplasmosis and who have not already taken dexamethasone for more than a few days.
Bandung, West JavaAges 18 years+ - NCT04344912Recruiting
Study of COVID-19 effects on heart emergency care
This study looks at how the COVID-19 outbreak affected care for people admitted to the cardiac intensive care unit. It may help hospitals improve how they plan and respond during major outbreaks.
ParisAges 18 years+ - NCT04362150Recruiting
Study of long-term effects after COVID-19 infection
This study follows adults who had COVID-19 to learn how the illness can affect health over the long term. It may help researchers understand lasting symptoms and who is at higher risk, which could improve future care.
San Francisco, CaliforniaAges 18–100 - NCT04359186Recruiting
Stopping HIV medicines briefly with close monitoring
This study looks at a planned, supervised “treatment interruption” period for people with HIV who are very well controlled on HIV medicines. It mainly aims to understand what happens when therapy is paused and how to reduce the risk of passing HIV to others.
San Francisco, CaliforniaAges 18 years+ - NCT04359836Recruiting
Study of gut bacteria in early COVID-19
This trial studies how gut bacteria (“gut flora”) may affect COVID-19 after a recent infection. If you test positive for COVID-19 soon enough, the study may help researchers understand why some people get better faster or have different symptoms.
Ventura, CaliforniaAges 18 years+ - NCT04363541Recruiting
Thermotherapy for mild to moderate COVID-19 symptoms
This trial studies whether local heat treatment (thermotherapy) can improve outcomes for people with mild to moderate COVID-19. It’s designed for people early in their illness (within 5 days) who still have good oxygen levels.
Guadalajara, JaliscoAges 18 years+ - NCT04367857Recruiting
Study of COVID antibody levels in healthcare workers
This study measures how many healthcare workers have COVID antibodies (proof of past infection or immune response). Results may help estimate how widespread COVID exposure has been among hospital staff.
New York, New YorkAges 18 years+ - NCT04367883Recruiting
Study of flu shots and blood-pressure medicines in COVID
This study looks at people who were admitted to the hospital in Terrassa starting in March 2020. Researchers want to see whether having a flu vaccine and using certain blood-pressure medicines (ACE inhibitors or ARBs) is linked to how COVID infection develops.
Terrassa, BarcelonaAges Any age - NCT04372485Recruiting
Text-message support to help teens finish STI antibiotics
This trial tests whether a mobile phone text-message program can help teens stick to their outpatient antibiotic treatment for common sexually transmitted infections (STIs). It may help improve cure rates by supporting correct medication timing and completion.
Washington D.C., District of ColumbiaAges 15–21 - NCT04372875Recruiting
Help for teens using health tech in the emergency room
This trial tests whether using a health information technology tool in the emergency department can improve sexual health care and reduce health disparities for teens. It focuses on gathering survey and screening information so care can better meet needs.
Washington D.C., District of ColumbiaAges 15–21 - NCT04375800RecruitingPhase 2
Doravirine for children with HIV infection and stable treatment
This Phase 2 study tests doravirine (a type of HIV medicine) in children with HIV who are about 4 weeks to under 12 years old and weigh under 45 kg. It aims to see whether this regimen can control the virus safely, and some children may continue into an extension if they benefit.
Aurora, ColoradoAges 4 weeks–11 years - NCT04377490Recruiting
Study of blood clots in hospitalized COVID-19 patients
This study looks at how often blood clot–related problems happen in people hospitalized with serious COVID-19 lung illness. It may help doctors understand risks and improve care for patients in the hospital.
AmiensAges 18 years+ - NCT04378439Recruiting
Rural Appalachian study for adult men who have sex with men
This study is looking to reduce health disparities by enrolling adults (18+) living in rural Appalachian areas who have had sex with men recently. If you fit, you may be asked to consent and share information about your experiences and health.
Winston-Salem, North CarolinaAges 18 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.