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
- NCT04745403RecruitingPhase 1
Trial of redirected HBV-targeting T cells for liver cancer
This Phase 1 study tests a lab-made immune cell treatment that targets hepatitis B (HBV)–related liver cancer. It may help by directing the body’s immune system to attack the cancer, while carefully checking safety.
SingaporeAges 21–75 - NCT04746183RecruitingPhase 1/Phase 2
Early trial testing treatments for COVID-19 in the first days
This early-stage study tests COVID-19 treatments in people who have recently developed symptoms and who test positive for the virus. It aims to find safer, more effective options for preventing worsening disease, especially in higher-risk groups.
Cape TownAges 18 years+ - NCT04746209RecruitingPhase 2
Blinatumomab after transplant for high-risk B-ALL patients
This trial tests blinatumomab, an immune therapy, in young people with B-cell acute lymphoblastic leukemia (B-ALL) after their transplant or when they are getting ready for transplant. The goal is to lower the chance of the leukemia coming back by targeting remaining leukemia cells.
Milwaukee, WisconsinAges Up to 25 years - NCT04748796RecruitingPhase 3
Landiolol to prevent death in ventilated septic shock patients
This trial tests whether landiolol (a short-acting heart-rate–lowering medicine) can reduce deaths compared with standard care in people in septic shock who have a fast heart rate and strong heart pumping. It is meant for a very specific type of critically ill patient while they are on a breathing machine.
AmiensAges 18 years+ - NCT04750070RecruitingPhase 3
Treating shock in young children with severe malnutrition and diarrhea
This study tests a treatment approach to help children who are in “shock” (their body is struggling to maintain blood flow and oxygen) caused by diarrhea and severe undernutrition. It may help care teams stabilize children faster and improve outcomes.
DhakaAges 1 month–4.9 years - NCT04751396Recruiting
Melanoma education for people with autoimmune conditions
This trial tests an educational tool to help people with melanoma and pre-existing autoimmune disease understand immune checkpoint inhibitor treatment. It aims to support you and your care team with information that can help you make decisions and feel more prepared.
Houston, TexasAges 18 years+ - NCT04759001RecruitingPhase 1/Phase 2
Fecal treatment to clear gut bacteria resistant to antibiotics
This study tests a stool-based treatment (fecal microbiota treatment) to help remove “carbapenem-resistant” bacteria living in the gut. If you carry these bacteria without being sick, the goal is to reduce or stop that colonization.
RomeAges 18–90 - NCT04762134Recruiting
Doxycycline to prevent future bacterial STIs in high-risk men
This trial tests whether taking doxycycline can lower the chance of getting bacterial sexually transmitted infections like syphilis, gonorrhea, and chlamydia. It is aimed at men who have had these infections recently and expect to keep having multiple male partners.
Calgary, AlbertaAges 18 years+ - NCT04767945Recruiting
Cirrhosis patient hospital registry
This study keeps a record of people who have liver cirrhosis and were admitted to the hospital after a worsening event. It may help doctors better understand what leads to hospital stays and improve future care.
Banská BystricaAges 19 years+ - NCT04771728RecruitingPhase 4
Probiotics added to treatment for bacterial vaginosis
This study tests whether adding probiotics to standard care helps treat bacterial vaginosis (BV) and possibly lowers the chance of it coming back. You would be placed into a study group to compare probiotic treatment with the other approach.
Shenzhen, GuangdongAges 18–55 - NCT04772170Recruiting
Study wearable and symptom monitoring during respiratory virus challenges
This observational study looks for digital health patterns during studies where people are intentionally exposed to a respiratory virus. If you join a respiratory virus challenge at NIH, you may help researchers discover better ways to monitor and understand illness using wearable devices and shared health data.
Bethesda, MarylandAges 18–65 - NCT04774705Recruiting
Noninvasive vagus nerve stimulation for sepsis in the ICU
This study tests whether a noninvasive device that stimulates the vagus nerve can help adults with sepsis in the intensive care unit. Researchers want to see if adding this treatment improves outcomes compared with standard ICU care.
GarchesAges 18 years+ - NCT04775134Recruiting
Checking leftover COVID virus after recovery
This study looks for whether small amounts of the COVID virus are still present in the lungs after infection. It may help doctors understand how long the virus can remain and inform future care, using tissue removed during a medically needed lung procedure.
LeuvenAges 18 years+ - NCT04790240RecruitingPhase 1/Phase 2
Herbal treatment aimed to reduce COVID-19 inflammation
This early-stage trial studies whether certain medical herbs can lower inflammation in people with recent COVID-19 and help the immune system better fight the virus. You may be able to join whether or not you take standard COVID medicines, but you would need to complete the herb plan and provide specific lab and scan results.
Rockville, MarylandAges Any age - NCT04794595Recruiting
Compare outcomes in children with and without CBP during sepsis
This study looks at children with sepsis to see how outcomes differ between those who receive a specific blood-cleansing treatment (CBP) and those who do not. Results may help clinicians choose treatments that lead to better recovery in sick children.
Shanghai, Shanghai MunicipalityAges 4 weeks–18 years - NCT04804943Recruiting
Testing an added breathing therapy for ARDS patients on ventilators
This pilot study tests NOA-001, a treatment given to people with ARDS (a serious lung condition) who are already on a breathing machine. It looks at whether the treatment can improve outcomes in ARDS caused by either non-COVID illnesses or COVID-19.
TokyoAges 16 years+ - NCT04806620Recruiting
Online app study for brain inflammation lifestyle data
This study uses a digital platform (app/website) to collect lifestyle and symptom information to better understand brain inflammation. You may qualify if you have certain conditions like Long COVID, migraines, autoimmune disease, inflammatory gut issues, mood disorders, or if you are a healthy comparison person.
Delafield, WisconsinAges 2 years+ - NCT04807842Recruiting
Testing ActiGel Plus to treat bacterial vaginosis
This study tests whether ActiGel Plus can treat bacterial vaginosis (BV). It may help by improving symptoms and vaginal health after BV is confirmed.
HamburgAges 18 years+ - NCT04807712Recruiting
Testing a pertussis workup for children at home visits
This trial studies children who might have pertussis (“whooping cough”). It looks at children in outpatient/home-care settings when the child’s doctor suspects pertussis and orders a lab test, to help guide evaluation and care.
CréteilAges 1 day–18 years - NCT04807894RecruitingPhase 4
Vaginal testosterone to prevent repeat UTIs in postmenopausal women
This study tests whether putting testosterone in the vagina can help prevent future bladder infections (UTIs) compared with a dummy treatment. It’s for older postmenopausal women who keep getting UTIs, especially those who can’t or don’t want to use vaginal estrogen.
Brooklyn, New YorkAges 60–90 - NCT04814446RecruitingPhase 3
Vaccine trial for stubborn warts on hands or feet
This Phase 3 trial tests a nonavalent HPV vaccine to treat long-lasting, hard-to-treat warts on the hands or feet. If you have tried standard treatments and the warts keep coming back or cause trouble, the vaccine may help your body clear the warts.
ParisAges 15 years+ - NCT04815096RecruitingPhase 2
PET scan study of immune activity after COVID-19
This Phase 2 study uses a special PET scan to look at how active your immune system is after a recent COVID-19 infection. The goal is to understand what the immune response looks like and whether this imaging approach could help guide care.
San Francisco, CaliforniaAges 18 years+ - NCT04832607RecruitingPhase 3
Donor T-cell treatment for stubborn CMV, EBV, or Adenovirus after transplant
This Phase 3 trial tests giving special immune cells from your stem-cell donor to treat difficult-to-control viral infections after a stem cell transplant. It may help your body fight the virus when standard antiviral medicines haven’t worked well enough.
BrusselsAges 2 months+ - NCT04834869Recruiting
Track safety after COVID-19 vaccination in adults
This study follows adults who have already received a COVID-19 vaccine to monitor side effects and safety over time. Your participation helps researchers understand how the vaccine affects different people who are at higher risk due to their work.
Philadelphia, PennsylvaniaAges 18 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.