Infectious disease
Infections clinical trials
Bacterial, viral, and other infections — from common illnesses to emerging threats. We’re tracking 4,178 recruiting studies in this area right now.
By phase
- Not applicable2,713
- Phase 2361
- Phase 4321
- Phase 1290
- Phase 3288
- Phase 1/Phase 2141
- Phase 2/Phase 364
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 University31
- 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
- Maryland146
- Alabama89
- New York76
- Florida74
- Texas61
- Massachusetts56
- Arizona47
- Pennsylvania45
- Illinois42
Recruiting studies4,178 total
- NCT05369611Enrolling by invitation
Share your COVID-19 experiences in a long-term study
This study asks people already enrolled in the NIEHS SELF cohort to answer a questionnaire about their COVID-19 experiences. Your answers can help researchers understand how COVID-19 affected people in this group.
Bethesda, MarylandAges 23–35 - NCT05350774Enrolling by invitationPhase 2
IV immunotherapy for lingering neurologic effects after COVID-19
This Phase 2 trial tests whether intravenous immunotherapy (IVIG) can improve ongoing neurologic symptoms after a mild-to-moderate COVID-19 illness. It targets people with persistent symptoms such as brain fog, fatigue, trouble thinking, dizziness when standing, and balance or other neurologic problems.
Bethesda, MarylandAges 18–100 - NCT05304728Enrolling by invitation
Hospital sepsis decision support program enrollment study
This study tests a computer system meant to help doctors recognize and manage sepsis (a serious body-wide response to infection) when people come to the emergency department or are admitted to the hospital. If you’re evaluated in a hospital setting for possible sepsis, you may be included to help improve care decisions.
Irvine, CaliforniaAges 18–89 - NCT05248919Enrolling by invitation
Study treatment for hepatitis C that did not work before
This trial looks at hepatitis C treatment for people whose last antiviral medicines did not fully clear the virus. It may help by testing a study drug approach for people in Pakistan who still have active hepatitis C infection.
Karachi, SindhAges 18–100 - NCT05224583Enrolling by invitation
Study BK virus after combined liver and kidney transplant
This study looks at how often BK virus shows up in people after a combined liver-kidney transplant. It may help the transplant team better predict and manage this virus after surgery.
Dallas, TexasAges 18–100 - NCT05131594Enrolling by invitation
Study immune response in Long COVID patients
This trial studies how your immune system responds in people with Long COVID after a past COVID-19 infection. It may help researchers understand why symptoms linger and how the body’s response could be targeted.
Pasadena, CaliforniaAges 18 years+ - NCT05110833Enrolling by invitation
Study dosing effects during monitored neck or chest spine surgery
This trial studies whether different medication dosing during monitored neck or upper chest spine surgery leads to better outcomes. You might help doctors figure out the most effective dosing approach for this type of surgery.
Minneapolis, MinnesotaAges 18 years+ - NCT05110443Enrolling by invitation
Compare two types of PET/CT scan pictures
This study compares two ways of taking PET/CT scan images. It may help doctors choose the best scan method for planning treatment, checking how it’s working, or evaluating infection or inflammation.
AarhusAges 18–85 - NCT05095701Enrolling by invitationPhase 4
Study tracks lasting protection from a live chickenpox vaccine
This trial follows people who previously took a chickenpox (varicella) vaccine to see how long their immune protection lasts. It may help explain who stays protected over time and for how long.
Xuchang, HenanAges 1–17 - NCT05075967Enrolling by invitation
Study attitudes and services among southern gay and bisexual men
This study gathers opinions and experiences from gay and bisexual men and from clinic staff in the American South. It helps researchers understand what affects HIV prevention and care, and how programs can better support people at higher risk.
Durham, North CarolinaAges 15 years+ - NCT05015686Enrolling by invitationPhase 3
Live chickenpox vaccine safety study for healthy teens and adults
This trial tests how safe and how well a live, weakened chickenpox (varicella) vaccine works in healthy people age 13 and older. If you qualify, you may receive the study vaccine and be monitored for side effects and immune response.
Shangqiu, HenanAges 13 years+ - NCT04987840Enrolling by invitation
Hospital program to reduce unnecessary lung culture tests in kids
This trial studies a hospital quality-improvement program that aims to use fewer “respiratory culture” tests in pediatric intensive care units (PICUs). It may help reduce unnecessary testing while maintaining good care for critically ill children.
Baltimore, MarylandAges Any age - NCT04984772Enrolling by invitation
HIV and hepatitis B coinfection follow-up study in Europe
This study follows people who have both HIV and hepatitis B over time to better understand how the infection responds after starting treatment. Your information (and sometimes stored blood samples) helps researchers track changes from the start of therapy to about 2 years later.
Ages 16 years+ - NCT04814693Enrolling by invitation
Endoscopic removal of pancreatic dead tissue: two technique options
This trial compares two ways of clearing “walled-off” dead tissue in the pancreas using an endoscope—one is standard tools, the other is the EndoRotor® system. It aims to see which approach is safer and works better after you’ve already had drainage.
Birmingham, AlabamaAges 18 years+ - NCT04735081Enrolling by invitation
Bed rest vs early getting up for spine bone infection
This study compares standard prolonged bed rest with starting to get up earlier in people with an infection of the spine bones and discs. It aims to see which approach is safer and leads to better recovery.
Ages 18 years+ - NCT04633603Enrolling by invitation
Study of attitudes toward fever and fever care changes
This study looks at how people think about fever and how fever care works in the healthcare system. You may be asked to record details of fever episodes at home or in outpatient care to help researchers understand real-world fever management.
PécsAges Up to 100 years - NCT04563715Enrolling by invitation
Study on HIV prevention for at-risk Latino adults
This study looks at ways to prevent HIV in Latino adults who are at higher risk. It may help by testing HIV prevention approaches in specific local communities.
Indianapolis, IndianaAges 18 years+ - NCT04398901Enrolling by invitation
Study of brain and development outcomes after Zika exposure
This study follows children to compare development in kids exposed to Zika before birth versus similar children not exposed. The goal is to understand what effects Zika exposure may have on early brain development and long-term outcomes.
Washington D.C., District of ColumbiaAges 3–7 - NCT04363047Enrolling by invitation
Study of immune cells in people linked to COVID-19
This study looks at immune (infection-fighting) cells in people who have previously joined certain healthy volunteer research groups. It may help researchers better understand how the immune system responds to coronavirus infections, including COVID-19.
Manchester, Greater ManchesterAges 18 years+ - NCT04357574Enrolling by invitation
Testing a radiation treatment decision system during COVID-19 changes
This trial looks at whether a computer system can help guide high-intensity radiation treatment decisions when care has been disrupted during COVID-19. It may help improve how treatment is planned and adjusted during times when patients’ situations change.
Durham, North CarolinaAges 18 years+ - NCT04326426Enrolling by invitationPhase 3
Study of tradipitant for severe or critical COVID-19
This trial tests whether tradipitant can improve outcomes for adults with severe or critical COVID-19, including pneumonia and low oxygen. It may help patients whose lungs are significantly affected and who need careful hospital-level care.
New York, New YorkAges 18–90 - NCT04178915Enrolling by invitation
Blood marker study to predict severe bacterial lung infection
This study looks at specific immune cells and how fats are transported in the blood to predict which people will have a severe bacterial infection (like pneumonia or sepsis). Your results may help doctors identify higher-risk patients earlier.
MinskAges 18–60 - NCT03856229Enrolling by invitation
Short steroid treatment for lung infection from PCP in HIV
This study tests whether short-term steroid treatment helps adults with a specific lung infection (PCP) that happens with HIV/AIDS. It compares outcomes in people who start steroids soon after admission while also taking standard PCP antibiotics.
México, State of MexicoAges 18–80 - NCT03713229Enrolling by invitation
Seville study of people with HIV at risk for anal cancer
This study follows people living with HIV who may be at higher risk for anal cancer. It aims to better understand risk and outcomes, which could help guide future screening or prevention.
SevilleAges 18 years+
Common questions
- How many infections clinical trials are recruiting?
- Clin2 is tracking 4,178 recruiting infectious disease studies from the U.S. registry right now, out of 7,113 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.