Infectious disease
Infections clinical trials
Bacterial, viral, and other infections — from common illnesses to emerging threats. We’re tracking 3,968 recruiting studies in this area right now.
By phase
- Not applicable2,549
- Phase 2357
- Phase 4301
- Phase 1287
- 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
- California233
- Maryland142
- Alabama93
- New York73
- Florida72
- Texas62
- Massachusetts57
- Arizona48
- Pennsylvania43
- Illinois41
Recruiting studies3,968 total
- NCT07215871Enrolling by invitationPhase 1
Second H10N7 flu challenge for prior participants
This study tests whether people who have already been exposed to a lab-made H10N7 flu virus can be safely exposed again. It checks how their immune system responds and how long they shed the virus, in a controlled, isolated setting.
Bethesda, MarylandAges 18–55 - NCT00004317RecruitingPhase 4
Treating Congenital Toxoplasmosis With Three Medications
This study tests a combination of three medications (pyrimethamine, sulfadiazine, and leucovorin) to treat toxoplasmosis—a parasitic infection passed from mother to baby during pregnancy. The goal is to see if early treatment prevents serious complications in infected infants.
Chicago, IllinoisAges Any age - NCT03097952Recruiting
Study of people with long-term hepatitis B in real life
This “real-life” study follows people with chronic hepatitis B to better understand their health over time. It may help researchers learn which factors affect outcomes in everyday care.
Changzhou, JiangsuAges Any age - NCT03120481Recruiting
Check how respiratory health changes in people without lung problems
This trial enrolls adults who recently had a chest X-ray as part of routine health screening and did not show major abnormal findings, and who do not have significant breathing symptoms. It may help researchers understand changes in respiratory health over time and improve how respiratory disease risk is monitored.
Seoul, SeoulAges 19–90 - NCT02149004Recruiting
HIV research study for people living with HIV
This study focuses on HIV in a research “platform” run by a university. It may help researchers learn more about HIV and improve care over time.
Cologne, North Rhine-WestphaliaAges 18 years+ - NCT03625739Recruiting
Study how TB medicines move through children’s bodies
This study looks at how common TB medicines are absorbed, used, and cleared in children who are already taking treatment for tuberculosis. It may help doctors choose safer and more effective doses for children.
BeijingAges 1 day–18 years - NCT03132311RecruitingPhase 4
Yellow fever vaccine study for certain people with HIV
This trial checks whether a yellow fever vaccine is safe and works well in adults with HIV who have relatively healthy immune function. It may help doctors understand the best way to protect people with HIV who have never had this vaccine.
Rio de JaneiroAges 18–59 - NCT03625011RecruitingPhase 4
Gabapentin before tonsil surgery to reduce pain
This trial tests whether giving gabapentin before pediatric tonsil (and possibly adenoid) removal can reduce postoperative pain. It may help children feel more comfortable after surgery while still being safe to use in the right patients.
Atlanta, GeorgiaAges 3–18 - NCT03818334RecruitingPhase 2/Phase 3
Cyclophosphamide after transplant for blood cancer without sibling donor
This trial studies giving cyclophosphamide after a stem cell transplant when there is no matched sibling donor, but a well-matched unrelated donor is available. It aims to improve outcomes for people with blood cancers undergoing this transplant.
São Paulo, São PauloAges 1–75 - NCT04042857Recruiting
Gel treatment for toenail fungus
This trial tests how well and how safely an antifungal gel works for toenail fungus in adults. You may be able to join if your toenail fungus is confirmed with lab tests and you can follow the study rules during the study.
South Miami, FloridaAges 18 years+ - NCT04140578RecruitingPhase 4
Antibiotic prevention for certain liver disease patients
This trial tests whether taking preventive antibiotics can help people with certain liver conditions avoid infections after an endoscopy-related procedure. It may reduce infection risk, but it also requires that you have no signs of infection and haven’t recently taken antibiotics.
TaipeiAges 20–85 - NCT04161768RecruitingPhase 3
Antibiotic pill study to prevent repeat belly infection in liver disease
This study tests whether taking norfloxacin plus itopride helps prevent another episode of spontaneous bacterial peritonitis (a serious belly infection) in people with cirrhosis and fluid buildup in the abdomen. It compares that combo to norfloxacin alone to see which approach better lowers repeat infections.
TantaAges Any age - NCT04168099RecruitingPhase 3
Oral gemifloxacin versus IV cefotaxime for peritonitis
This trial compares two antibiotic treatments for spontaneous bacterial peritonitis—one taken by mouth (gemifloxacin) versus one given through a vein (cefotaxime). It may help find the best way to treat this infection and improve recovery.
TantaAges 18 years+ - NCT04494724RecruitingPhase 2
Clazakizumab for hospitalized COVID-19 patients
This trial tests a drug called clazakizumab, which may reduce harmful inflammation in the lungs of people hospitalized with COVID-19. It aims to see if the drug can help patients recover better than a placebo.
Houston, TexasAges 18 years+ - NCT04020536Recruiting
Real-world study for several infectious diseases
This study follows people with confirmed brucellosis, epidemic hemorrhagic fever, or kala-azar (visceral leishmaniasis) to understand how these infections behave in real life. It may help improve care by collecting evidence on diagnosis and treatment outcomes.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT04415983RecruitingPhase 3
Nitazoxanide for stomach infection in children
This trial studies nitazoxanide to treat Helicobacter pylori, a common stomach infection, in children. If you test positive for this infection and haven’t been treated for it before, you may be able to join.
TantaAges Up to 18 years - NCT04442191RecruitingPhase 2
Convalescent plasma for hospitalized COVID-19 patients over 40
This trial tests whether donated “recovered patient” plasma (antibodies from people who had COVID-19) can improve outcomes for people hospitalized with COVID-19. It focuses on patients early in their illness who need a small amount of oxygen.
Chicago, IllinoisAges 40 years+ - NCT03643718Recruiting
Emergency surgery and trauma patient registry online
This trial is a web-based registry that collects information about people who need emergency surgical or non-surgical treatment for sudden (acute) problems. Your information can help doctors better understand and improve emergency care and decision-making.
PisaAges Any age - NCT04500678RecruitingPhase 2/Phase 3
Metformin to improve immune health in HIV
This study tests whether a diabetes drug called metformin can improve the immune system and help keep the HIV virus under control in people who are already doing well on HIV treatment. If you are over 40 and have had a stable viral load for a year, this could be a way to boost your immune health.
Honolulu, HawaiiAges 40 years+ - NCT02647879Recruiting
Preventing hepatitis C spread with treatment in Iceland
This study looks at giving hepatitis C treatment to people who test positive, to help prevent the infection from spreading. If you are 18 or older, live in Iceland, and can consent, you may be able to join.
ReykjavikAges 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+ - NCT04382846RecruitingPhase 3
Testing new treatment combinations for COVID-19
This trial studies new drug treatment plans for people who currently have COVID-19. If it works better than standard care, it could improve recovery for patients.
TantaAges 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+ - NCT04351347RecruitingPhase 2/Phase 3
Testing higher-dose ivermectin for COVID-19
This trial studies whether a higher dose of ivermectin helps people with COVID-19. It looks at how well the treatment works and whether it causes side effects for participants.
TantaAges Any age
Common questions
- How many infections clinical trials are recruiting?
- Clin2 is tracking 3,968 recruiting infectious disease studies from the U.S. registry right now, out of 6,521 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.