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
- NCT05602376Recruiting
HIV messages to help men get tested and stay in care
This study tests whether special “U=U” style messages can improve how men move from HIV testing to starting treatment and continuing care. You may be asked to receive guidance and information meant to help you stay engaged in HIV treatment.
East London, Eastern CapeAges 15 years+ - NCT05603650Recruiting
Mouthwash study for healthy bacteria in your mouth and gut
This study tests how a mouthrinse changes the helpful bacteria in your mouth and stomach/gut. You may need several visits and phone follow-ups to see how your microbiome shifts over time.
Irvine, CaliforniaAges 18 years+ - NCT05603728Recruiting
Follow-up study for Exactech shoulder implants after surgery
This study follows people who get (or already had) a shoulder replacement to see how the implant is doing over time. It may help improve future care by tracking long-term performance and safety.
Laguna Woods, CaliforniaAges 21 years+ - NCT05604846Recruiting
Probiotic drops for very preterm babies in Scandinavia
This trial studies whether giving probiotic supplements to extremely preterm newborns helps improve health outcomes. It’s meant for babies born very early, and the results could help guide safer early nutrition and care.
Solna, Stockholm CountyAges 5 months–6 months - NCT05610098Recruiting
Study of gene activity in spinal tuberculosis
This trial looks at patterns of gene activity (from blood/tissue samples) in adults with spinal tuberculosis. The goal is to better understand the disease and how to tell different conditions apart, which may help future care.
Cape Town, Western CapeAges 18 years+ - NCT05610436Recruiting
Long COVID patients: tracking symptoms and outcomes over time
This study follows people who have ongoing symptoms after COVID (“post-Covid condition”) to better understand how symptoms change and what factors affect recovery. It may help improve care for patients seen at a Long COVID support clinic.
Vandœuvre-lès-Nancy, Grand EstAges 18 years+ - NCT05616130Recruiting
Study of abnormal blood immune activation after trauma or elective hip surgery
This study looks at how the body’s blood-related immune system “switches on” in unusual ways after a major injury or elective hip repair. The researchers hope this helps them understand who is at risk for complications and why, by measuring changes in your blood around the time of surgery or hospital treatment.
Gainesville, FloridaAges 18–100 - NCT05616546RecruitingPhase 4
Study of immune responses during and after flu infection
This study looks at how your immune system (your body’s infection-fighting system) responds during and around the time of a flu illness. It’s meant to help researchers better understand immune changes in healthy adults and may guide future flu care.
Atlanta, GeorgiaAges 18–64 - NCT05620329Recruiting
Pleural fluid registry for drainage in adults
This registry collects information from adults who have fluid around the lungs (pleural effusion) and need clinically indicated drainage because of infection or cancer. It helps researchers better understand these conditions and improve future care.
Chapel Hill, North CarolinaAges 18 years+ - NCT05623007Recruiting
Diet and gut bacteria study for vaccinated teens with COVID
This trial tests whether changing diet can shift gut bacteria in overweight or obese teens after COVID-19 vaccination. The goal is to see if dietary changes can affect health markers related to the gut and immune system.
Jakarta Pusat, DKI JakartaAges 12–17 - NCT05623722Recruiting
Nerve block to help organ function in severe gut sepsis
This trial studies whether an erector spinae plane nerve block (a pain-control injection near the spine) can improve organ health in adults with sepsis caused by acute gut injury. It’s meant for people sick enough to need ICU care for several days.
Guangzhou, GuangdongAges 18 years+ - NCT05625633RecruitingPhase 2/Phase 3
HPV vaccine vs placebo for stubborn skin warts
This study tests whether an HPV vaccine can help shrink or clear cutaneous (skin) warts that have not responded to prior treatments. Participants get the study vaccine or a placebo to compare results and safety.
Salt Lake City, UtahAges 18 years+ - NCT05626530RecruitingPhase 4
Letermovir to prevent CMV after transplant illness
This trial studies whether letermovir can help prevent CMV (a common virus after transplant) from coming back after you’ve already been treated. If you qualify, you may be offered letermovir as “secondary prevention” and followed for about 6 months.
Boston, MassachusettsAges 18–75 - NCT05627713Recruiting
Studying monkeypox infection and vaccine in adults
This study looks at the medical and lab changes in people with suspected or likely monkeypox, and in adults who may be eligible for a monkeypox vaccine. Your participation helps researchers understand how infection and vaccination affect the body and how to improve care.
ParisAges 18 years+ - NCT05631405Recruiting
Dexamethasone for serious dengue with warning signs
This trial studies whether dexamethasone (a steroid medicine) can help people with dengue infection who have warning signs and are still in the fever stage. It may help reduce complications like breathing problems, severe bleeding, or organ stress, but it is only for a specific window and situation.
BangkokAges 7–99 - NCT05633056Recruiting
Testing TB medicines for people with drug-resistant TB and HIV
This trial studies a treatment plan for people who have both drug-resistant tuberculosis (TB) and HIV. It focuses on starting a specific TB medication (bedaquiline) and, if needed, HIV treatment soon after enrollment to see what approach works best.
Durban, KwaZulu-NatalAges 18 years+ - NCT05634057Recruiting
Treating sepsis with a medication plus blood thinner
This trial studies whether combining anisodamine (a medicine for certain gut/smooth-muscle effects) with a low-molecular-weight blood thinner helps treat sepsis. It may be aimed at improving outcomes compared with standard care, but eligibility depends on safety factors like bleeding risk and organ function.
Beijing, ChinaAges 18–110 - NCT05634733Recruiting
Testing how a heart ultrasound finding changes in sepsis treatment
This study looks at how a measurement from a bedside heart ultrasound changes while treating people with sepsis or septic shock. It may help doctors understand how to monitor response to treatment using a quick ultrasound test.
Baltimore, MarylandAges 18 years+ - NCT05637879RecruitingPhase 2/Phase 3
Glecaprevir for PTSD symptoms in Veterans
This Phase 2/3 study tests whether glecaprevir/pibrentasvir can reduce post-traumatic stress disorder (PTSD) symptoms. It may help Veterans whose PTSD is still affecting daily life, alongside any allowed standard care.
White River Junction, VermontAges 19–70 - NCT05638724Recruiting
Long COVID health registry for people of all ages
This study builds a health registry to learn how long COVID affects children, teens, and adults over time. It may help by improving understanding of symptoms and care, even if it does not test a new drug.
Munich, BavariaAges Any age - NCT05639933RecruitingPhase 2
Topical cream for EGFR inhibitor skin rash in cancer patients
This Phase 2 study tests a topical cream (HT-001) to treat skin rashes caused by EGFR inhibitors. It aims to see whether the cream is safe and can reduce rash symptoms and discomfort.
Irvine, CaliforniaAges 18 years+ - NCT05639465Recruiting
Prevent mental health symptoms in kids after disasters
This study tests an intervention to help children who were affected by the COVID-19 pandemic and another major disaster avoid later mental health symptoms. It may help families by offering support before problems get worse.
Bradenton, FloridaAges 8–14 - NCT05641116Recruiting
Exercise plus education program for long-lasting Lyme-related symptoms
This trial tests whether a combined program of adapted exercise and therapeutic education can improve long-lasting symptoms that are thought to be related to Lyme disease. It may help people who have symptoms for over 6 months and are not very active currently.
Clermont-FerrandAges 18 years+ - NCT05642715Recruiting
HIV smoking reduction program with varenicline and online support
This study tests a harm-reduction approach to help people with HIV smoke fewer cigarettes and quit if they want, using an online tobacco program and varenicline (a quit-smoking medicine). You may be placed in one of two different study groups to compare how well the approaches work.
The Bronx, New YorkAges 40–79
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.