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
- NCT04580680Recruiting
Testing a blood-filter treatment in critically ill ICU patients
This study looks at an add-on blood-filter treatment used in the ICU to help remove harmful substances like waste products, inflammation signals, or toxins from the blood. Results may help doctors understand whether this approach improves care and how it should be used.
FlorenceAges Any age - NCT04582903Recruiting
Send-in sample collection study for immune response to respiratory viruses
This study collects sent-in samples to better understand how your immune system responds during a COVID-19–like illness and after you recover. It may help researchers learn why some people get sick and others stay uninfected, and how immune protection works over time.
Rockville, MarylandAges 1 day–99 years - NCT04586413Recruiting
Help build and study a quality-of-life tool after COVID-19
This study will collect information from adults who had COVID-19 (confirmed by a test or diagnosis) to develop and improve a questionnaire about life after infection. Your answers may help researchers better track symptoms and quality of life over time.
OxfordAges 18 years+ - NCT04588077RecruitingPhase 4
Two-dose vs three-dose hepatitis B vaccine for cirrhosis
This study compares giving the hepatitis B vaccine in 2 doses versus 3 doses for people with cirrhosis who do not yet have protection against hepatitis B. It may help your care team choose the schedule most likely to build lasting immunity.
Baltimore, MarylandAges 18 years+ - NCT04597164Recruiting
Test a hepatitis B–targeted treatment for serious liver failure
This trial studies a combination approach called DPMAS and low-volume plasma exchange for people with hepatitis B–related acute-on-chronic liver failure. If you qualify, the goal is to improve your liver function and reduce serious complications from liver failure.
Guangzhou, GuangdongAges 18–65 - NCT04604730Recruiting
Testing a protective stoma after bowel reconnection for infection
This study looks at whether creating a temporary “protective stoma” (an opening that diverts stool) after reconnecting the bowel can reduce complications for people with severe abdominal infection from a perforated diverticulitis. It’s for adults who had surgery to reconnect their colon right away.
Beauvais, BeauvaisAges 18 years+ - NCT04606849Recruiting
Pilot ePNa tool for pneumonia decisions in urgent care
This trial tests and rolls out an electronic support tool (ePNa) to help urgent care clinicians decide how to evaluate and manage pneumonia. It may help by standardizing decision-making so patients get more consistent care.
American Fork, UtahAges 12 years+ - NCT04606732Recruiting
Tracking heart risk changes after COVID-19 hospitalization
This study looks at how COVID-19 affects heart health over time in people who were hospitalized. Your results may help doctors predict prognosis and understand who is at higher heart risk after recovery.
BolognaAges 18 years+ - NCT04611243Recruiting
Follow-up study after hospital recovery from COVID-19
This study checks how well your lungs work and how much exercise you can do after you’ve been discharged from the hospital for COVID-19. It also measures blood (serology) results to understand recovery and possible immune response changes over time.
Hong KongAges 18 years+ - NCT04615065Recruiting
Biobank study collecting emergency data for very sick patients
This study collects health and sometimes blood sample information from people arriving at the emergency department with high-risk or serious conditions. The goal is to build a large emergency “biobank” to help researchers better understand and improve urgent care.
GroningenAges 18 years+ - NCT04645511Recruiting
Balloon treatment for long-term or repeat maxillary sinusitis
This study tests whether balloon sinuplasty works better or more efficiently for people with long-lasting or repeatedly returning inflammation in the maxillary sinuses (side sinuses near your cheeks). It focuses on people who did not improve with the usual nose spray (topical steroid) or who meet specific “recurrent” episode patterns.
TampereAges 18–69 - NCT04647656Recruiting
Hyperbaric oxygen for lingering post-COVID brain fog
This study tests whether breathing pure oxygen in a pressurized chamber (hyperbaric oxygen therapy) can improve long-lasting post-COVID problems with thinking and memory. It may help if your brain symptoms have lasted at least 3 months and affect your daily life.
ẔerifinAges 18 years+ - NCT04648046RecruitingPhase 1/Phase 2
CAR-T cell treatment for HIV infection
This early-phase study tests whether CAR-T cells (immune cells modified to recognize HIV) can help control HIV. You may be asked to briefly pause HIV medicines to see how well the treatment controls the virus.
Sacramento, CaliforniaAges 18–65 - NCT04647630Recruiting
Check which pneumococcus types cause pneumonia
This trial looks at which “pneumococcus” (a common germ) types are causing pneumonia in people admitted to the hospital. It uses a urine test kit to see how often different pneumococcal types are involved, which may help future treatment choices.
ShatinAges 18 years+ - NCT04650607Recruiting
Phage therapy safety check in serious infection patients
This study checks the safety of using phage therapy (viruses that target certain bacteria) in adults being treated for serious infections. If you meet the safety rules, your care team may enroll you to help confirm phage treatment is safe.
LyonAges 18 years+ - NCT04653610Recruiting
Study immune signals in untreated HIV using extra samples
This study looks at tiny cell “messengers” in blood and stool to understand how HIV behaves before and after starting treatment. You may be eligible if you have untreated HIV (or you’re a healthy volunteer) and can commit to many sample visits, including long-term storage for 20 years.
Ghent, Oost-VlaanderenAges 18–65 - NCT04664179RecruitingPhase 1
EBV immune-cell treatment for EBV-positive lymphoma
This Phase 1 study tests an immune-cell therapy made to recognize EBV (a common virus) in people whose lymphoma contains EBV. It may help control EBV-driven cancers, especially when standard treatment isn’t working or can’t be used.
Houston, TexasAges Any age - NCT04664556Recruiting
Study of severe pneumococcal infections in children
This study tracks cases of invasive pneumococcal disease (a serious infection) in children and newborns. It may help clinicians better understand how these infections happen and guide future prevention and treatment.
CréteilAges 1 day–18 years - NCT04666246Recruiting
Studying breathing effort in people with COVID-19 breathing failure
This study looks at how hard people with COVID-19 are working to breathe when they have serious breathing trouble but are not yet fully on a breathing machine. The results may help doctors better understand breathing support needs and improve care.
ModenaAges 18–80 - NCT04667026Recruiting
Study of people living with HIV on treatment
This is an observational study that follows people with HIV who are taking HIV medicines (antiretroviral therapy). It may help researchers understand how treatment is going and what factors relate to doing well on therapy.
Guangzhou, GuangdongAges 14 years+ - NCT04678193Recruiting
Study to track who may get hospitalized from COVID
This trial studies COVID risk to predict who is more likely to need hospital care and to better understand how COVID spreads. It may help future patients by improving risk assessment using test results and risk scores.
Phoenix, ArizonaAges 18 years+ - NCT04679584Recruiting
Study of long-term effects after COVID-19 infection
This study looks at how COVID-19 can affect health and quality of life over the long term. It may help researchers understand symptoms that can last and what changes people experience after recovery.
Würzburg, BavariaAges 18 years+ - NCT04681339Recruiting
Antibiotics in hospitalized children with community pneumonia
This study looks at how antibiotics are prescribed for children who are hospitalized with community-acquired pneumonia. It may help doctors choose more appropriate antibiotic use for kids in the hospital.
Filderstadt, Baden-WurttembergAges 3 months–18 years - NCT04684602RecruitingPhase 1/Phase 2
Study of stem cells for several short- and long-term illnesses
This early-stage study tests whether injections of mesenchymal stem cells can be safe and helpful for certain chronic (long-term) and acute (short-term) conditions. You might be considered if you can consent, are able to return for follow-up visits, and do not have key reasons that would make stem-cell treatment unsafe.
Culver City, CaliforniaAges 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.