Home › Infectious Diseases
Infectious Diseases clinical trials recruiting in the U.S.
22 studies for Infectious Diseases are recruiting participants at sites across the United States.
Infectious diseases are caused by four main kinds of germs. Vaccines, proper hand washing and medicines can help prevent infections. Discover more.
Cities with the most studies
By state
- California5 studies
- Illinois4 studies
- Maryland4 studies
- New York3 studies
- Ohio4 studies
- Tennessee4 studies
- Texas4 studies
Recently updated studies
Admission and Management of Occupational or Other Exposures to Biodefense/Bioterrorism Agents or to Epidemic/Emerging Infectious Diseases
RecruitingObservational studyHealthy volunteers welcome
Ages 3 to 99 · All sexes · Updated Sep 28, 2026 · NCT01200953Study of AHB-137 in Chronic Hepatitis B (CHB) Participants in North America and Europe Regions
RecruitingPhase 2
Ages 18 to 65 · All sexes · Updated Sep 24, 2026 · NCT07654283High vs.Standard Dose Influenza Vaccine in Pediatric Solid Organ Transplant (SOT) Recipients
RecruitingPhase 2
Ages 3 to 17 · All sexes · Updated Sep 24, 2026 · NCT05947071Studies of the Pathogenesis of HIV Infection in Human Peripheral Blood Cells and/or Body Fluids in People Living With and Without HIV
RecruitingObservational studyHealthy volunteers welcome
Ages 18 to 120 · All sexes · Updated Sep 22, 2026 · NCT00001281Understanding the Burn Wound Microbiome: Comparing Traditional Wound Cultures to Next Generation Sequencing Technology
RecruitingObservational study
Ages 18 to 100 · All sexes · Updated Sep 14, 2026 · NCT05275335An International Observational Study of Adults With Acute Infection
RecruitingObservational study
Ages 18 and older · All sexes · Updated Aug 27, 2026 · NCT07069400Administering NMT to Reestablish Infant Nasal Microbiome Diversity Following Intranasal Mupirocin Treatment
RecruitingPhase 1Healthy volunteers welcome
Ages 0 to 60 · All sexes · Updated Aug 10, 2026 · NCT06805994Changes in Microbial Status From Dentate, Edentulous and After Dental Implant Placement
RecruitingObservational studyHealthy volunteers welcome
Ages 21 and older · All sexes · Updated Jul 1, 2026 · NCT06149585Skin Preparation for Elective Foot and Ankle Surgery
RecruitingPhase 4
Ages 18 and older · All sexes · Updated Apr 27, 2026 · NCT05401292Pharmacogenomics for Better Treatment of Fungal Infections Clinical Trial
RecruitingPhase 2Healthy volunteers welcome
Ages 2 and older · All sexes · Updated Apr 16, 2026 · NCT06510699Genetics of Uveitis
RecruitingObservational studyHealthy volunteers welcome
Ages 6 and older · All sexes · Updated Mar 4, 2026 · NCT02357238BLOOM: Pragmatic Feasibility Trial
Recruiting
Ages 18 and older · All sexes · Updated Feb 6, 2026 · NCT07287332Assessment of the Ocular Microbiome in Health and Disease
RecruitingObservational studyHealthy volunteers welcome
Ages 18 and older · All sexes · Updated Jan 22, 2026 · NCT05414994Effects of Mouthrinse on the Microbiome of the Oral Cavity and GI Tract
RecruitingHealthy volunteers welcome
Ages 18 and older · All sexes · Updated Dec 17, 2025 · NCT05603650Biospecimen Analysis in Detecting Chemical Concentrations in Patients With Chronic or Infectious Diseases Receiving Meditations
RecruitingObservational study
Ages 18 and older · All sexes · Updated Nov 10, 2025 · NCT04160429High vs. Standard Dose Influenza Vaccines in Lung Transplant (Repeater)
RecruitingPhase 2
Ages 18 and older · All sexes · Updated Oct 7, 2025 · NCT07192458Personalized Responses to Dietary Composition Trial 3
RecruitingHealthy volunteers welcome
Ages 18 and older · All sexes · Updated Apr 16, 2025 · NCT04735835Gut Microbiota-dependent Health Impacts of Haskap Berries
RecruitingHealthy volunteers welcome
Ages 35 to 65 · All sexes · Updated Apr 2, 2025 · NCT06546020Antibiotics for Delirium in Older Adults With No Clear Urinary Tract Infection
Recruiting
Ages 60 and older · All sexes · Updated Sep 19, 2024 · NCT06004739Triage Survey for Infectious Disease Eligibility
RecruitingObservational studyHealthy volunteers welcome
Ages 18 and older · All sexes · Updated Jul 9, 2024 · NCT06492187Collection and Distribution of Biospecimens for Novel Research Uses
RecruitingObservational studyHealthy volunteers welcome
1 Month – 89 Years · All sexes · Updated Nov 9, 2022 · NCT03848962Pyrimethamine, Sulfadiazine, and Leucovorin in Treating Patients With Congenital Toxoplasmosis
RecruitingPhase 4
All ages · All sexes · Updated May 14, 2009 · NCT00004317From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.