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Respiratory Tract Infections clinical trials recruiting in the U.S.
12 studies for Respiratory Tract Infections are recruiting participants at sites across the United States.
Cities with the most studies
- Washington, DC4 studies
- Houston, TX4 studies
- Dallas, TX4 studies
- Hialeah, FL4 studies
- Pittsburgh, PA4 studies
- Boise, ID3 studies
- Columbus, OH3 studies
- Durham, NC3 studies
- Salt Lake City, UT3 studies
By state
- California4 studies
- Colorado3 studies
- District of Columbia3 studies
- Florida6 studies
- Georgia4 studies
- Idaho3 studies
- Illinois4 studies
- Kentucky3 studies
- Maryland4 studies
- Michigan4 studies
- New York4 studies
- North Carolina4 studies
- Ohio5 studies
- Pennsylvania7 studies
- South Carolina3 studies
- Texas5 studies
- Utah4 studies
Recently updated studies
Efficacy and Safety of Tozorakimab in Patients Hospitalised for Viral Lung Infection Requiring Supplemental Oxygen
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Oct 2, 2026 · NCT05624450A Study of COVID-19 Vaccine(s) in Children and Adults
RecruitingPhase 3Healthy volunteers welcome
Ages 5 and older · All sexes · Updated Sep 28, 2026 · NCT07798648A Study to Learn About a Study Medicine Called Ibuzatrelvir in Adult and Adolescent Patients With COVID-19 Who Are Not Hospitalized But Are at Risk For Severe Disease
RecruitingPhase 3
Ages 12 and older · All sexes · Updated Sep 25, 2026 · NCT06679140A Study to Learn About the Study Medicine Ibuzatrelvir in Adults With COVID-19 Who Are Severely Immunocompromised
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Sep 25, 2026 · NCT07013474Viral Infections in Healthy and Immunocompromised Hosts
RecruitingObservational studyHealthy volunteers welcome
6 Months – 120 Years · All sexes · Updated Sep 14, 2026 · NCT01306084Estimating Risk of Respiratory Infections Attributable to CFTR Heterozygosity
RecruitingObservational study
Ages 18 to 100 · All sexes · Updated Sep 4, 2026 · NCT05474430How OMT Benefits Newly Diagnosed Patients With Respiratory Illness When Given Alongside Other Standard Care.
Recruiting
Ages 65 to 100 · All sexes · Updated Aug 11, 2026 · NCT06495021A Study to Learn About a COVID-19 Vaccine in Healthy Adults 18 Through 64 Years of Age
RecruitingPhase 4Healthy volunteers welcome
Ages 18 to 64 · All sexes · Updated Aug 7, 2026 · NCT07730450Functional Impact of Acute Respiratory Viral Infections in Older Adults
RecruitingObservational study
Ages 60 and older · All sexes · Updated May 8, 2026 · NCT07388173An Adjunct Test Distinguishing Bacterial From Viral Etiology Improves Resource Utilization and Efficiency in the ED.
Recruiting
Ages 18 and older · All sexes · Updated Jan 23, 2026 · NCT06070688Artificial Intelligence Diagnostic Decision Support to Reduce Antimicrobial Prescriptions in Young Children With Colds
Recruiting
6 Months – 24 Months · All sexes · Updated Jan 7, 2026 · NCT06876259Randomized, Embedded, Multifactorial Adaptive Platform Trial for Community- Acquired Pneumonia
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Jul 12, 2024 · NCT02735707From ClinicalTrials.gov, data retrieved Oct 5, 2026. Each study sets its own eligibility; the study team decides who can join.