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ClinicalTrials.gov public records Last synced Oct 14, 2026, 5:35 PM EDT

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Showing 433–456 of 3,925 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Respiratory Tract Infections (RTI) Clear all
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Brain and Gut Plasticity in Mild TBI or Post-acute COVID Syndrome Following Growth Hormone Therapy

NCT03554265
View directory record Official record
Conditions
Traumatic Brain Injury, Fatigue, Cognitive Impairment, COVID-19
Interventions
Somatropin
Drug
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
18 Years to 70 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 5, 2025 · Synced Oct 14, 2026, 5:35 PM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

COVID-19 In-vitro Diagnostic Test and Androgen Receptor Gene Expression

NCT04530500
View directory record Official record
Conditions
Covid19, Androgen Receptor Gene Overexpression
Interventions
COVID-19 Androgen Sensitivity Test (CoVAST)
Genetic
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 90 Years · Male only
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
2
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated May 8, 2024 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 2 Interventional Results available

University of Utah COVID-19 Hydrochloroquine Trial

NCT04342169
View directory record Official record
Conditions
Coronavirus Infection, Coronavirus, Infectious Disease
Interventions
Hydroxychloroquine, Placebo oral tablet
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
368 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 15, 2023 · Synced Oct 14, 2026, 5:35 PM EDT
Completed No phase listed Observational

Antimicrobial Resistance During the SARS-CoV-2 (COVID-19) Pandemic

NCT06334731
View directory record Official record
Conditions
COVID-19
Interventions
Not listed
Lead sponsor
Methodist Health System
Other
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jul 28, 2025 · Synced Oct 14, 2026, 5:35 PM EDT
Not listed No phase listed Observational

The Provider Insurance Revenue Study in Healthcare Providers in the United States of America

NCT04587245
View directory record Official record
Conditions
Covid19, Financial Disclosure
Interventions
Online questionnaire and interviews
Other
Lead sponsor
ND Sciences, LLC
Industry
Eligibility
Not listed
Enrollment
100 participants
Timeline
2020 – 2022
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated Oct 18, 2021 · Synced Oct 14, 2026, 5:35 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Optimizing Prevention of Healthcare-Acquired Infections After Cardiac Surgery (HAI)_2

NCT02073760
View directory record Official record
Conditions
Cardiovascular Disease, Healthcare Associated Infectious Disease, Sternal Superficial Wound Infection, Deep Sternal Infection, Mediastinitis, Thoracotomy, Conduit Harvest or Cannulation Site, Sepsis, Pneumonia
Interventions
There is no intervention. The investigators are interviewing cardiac surgery staff with knowledge of infection prevention.
Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 22, 2018 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Not applicable Interventional

Adult Influenza Vaccination Text Message Reminders With Electronic Health Record Alerts

NCT02284594
View directory record Official record
Conditions
Influenza
Interventions
text message
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
4,026 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 19, 2015 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Yogurt Study in Children 2-4 Years Old Attending Daycare

NCT00760851
View directory record Official record
Conditions
Infections, Respiratory, Diarrhea
Interventions
probiotic strain Bb-12, no Bb-12
Other
Lead sponsor
Georgetown University
Other
Eligibility
2 Years to 4 Years
Enrollment
190 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Mar 18, 2011 · Synced Oct 14, 2026, 5:35 PM EDT
Completed No phase listed Observational

A Study To Examine Serologic Response In Hospitalized Patients Receiving Polyvalent Pneumococcal Vaccine

NCT00955851
View directory record Official record
Conditions
Pneumonia
Interventions
Pre and post vaccination titers
Other
Lead sponsor
George Washington University
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 30, 2010 · Synced Oct 14, 2026, 5:35 PM EDT
Completed No phase listed Observational

COVID-19 in Patients With HIV

NCT04333953
View directory record Official record
Conditions
HIV/AIDS, COVID-19, SARS-CoV-2
Interventions
No intervention
Other
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
Not listed
Enrollment
412 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated May 23, 2022 · Synced Oct 14, 2026, 5:35 PM EDT
Active, not recruiting Not applicable Interventional

A Study of Healthy Microbiome, Healthy Mind

NCT06020703
View directory record Official record
Conditions
Critical Illness, COVID-19, PICS, Cognitive Impairment, Mental Health Impairment, Weakness, Muscle, Dysbiosis
Interventions
Fermented Food Diet
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Oct 14, 2026, 5:35 PM EDT
Withdrawn Phase 2 Interventional

Anakinra, COVID-19, Cytokine Storm

NCT04603742
View directory record Official record
Conditions
Covid19, Cytokine Storm, Mechanical Ventilation Complication
Interventions
Anakinra, 0.9% Saline
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 89 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 25, 2022 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 4 Interventional Results available

Strategies and Treatments for Respiratory Infections &Amp; Viral Emergencies (STRIVE): Immune Modulation Strategy Trial

NCT05822583
View directory record Official record
Conditions
COVID-19
Interventions
abatacept infusion, Placebo group
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
285 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
82
States / cities
Birmingham, Alabama • Tucson, Arizona • Davis, California + 58 more
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Oct 14, 2026, 5:35 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

GlowTest COVID-19 Antigen Home Test Kit Usability Study

NCT05172154
View directory record Official record
Conditions
COVID-19
Interventions
GlowTest COVID-19 Antigen Home Test Kit
Diagnostic Test
Lead sponsor
Arion Bio
Industry
Eligibility
2 Years and older
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Elkridge, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 19, 2022 · Synced Oct 14, 2026, 5:35 PM EDT
Completed No phase listed Observational

Acceptability of Telehealth Triage Using Robotic Systems in COVID-19

NCT04452695
View directory record Official record
Conditions
COVID-19, Telemedicine, Robotics, Emergencies, Emerging Infectious Disease
Interventions
Doctor Spot
Device
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 21, 2022 · Synced Oct 14, 2026, 5:35 PM EDT
Terminated Phase 2 Interventional Results available

Study of F-652 (IL-22:IgG2 Fusion Protein) in Patients With Moderate to Severe COVID-19

NCT04498377
View directory record Official record
Conditions
Covid19
Interventions
F-652, Placebo
Biological
Lead sponsor
EVIVE Biotechnology
Industry
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Dec 21, 2023 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 4 Interventional Results available

Safety and Efficacy Study of Guaifenesin and Pseudoephedrine for Symptomatic Therapy to Treat Acute RTI

NCT01202279
View directory record Official record
Conditions
Acute Upper Respiratory Track Infection
Interventions
Guaifenesin, Placebo
Drug · Device
Lead sponsor
Reckitt Benckiser Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
1,179 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
24
States / cities
Mesa, Arizona • Carmichael, California • Fresno, California + 21 more
Source: ClinicalTrials.gov public record
Updated Dec 30, 2020 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 1 Interventional

Hydroxychloroquine in Cystic Fibrosis

NCT00311883
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
hydroxychloroquine
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
16 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 30, 2008 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Post-licensure, Modified Double-blind, Multi-center Study Evaluating Safety and Immunogenicity of ADACEL® and BOOSTRIX®

NCT00319553
View directory record Official record
Conditions
Pertussis, Tetanus, Diphtheria
Interventions
ADACEL®:Tetanus, Reduced Diphtheria and Acellular Pertussis Adsorbed, BOOSTRIX®: Tetanus, Reduced Diphtheria and Acellular Pertussis Adsorbed
Biological
Lead sponsor
Sanofi
Industry
Eligibility
11 Years to 18 Years
Enrollment
647 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
10
States / cities
Annapolis, Maryland • Baltimore, Maryland • Frederick, Maryland + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 5, 2012 · Synced Oct 14, 2026, 5:35 PM EDT
Active, not recruiting No phase listed Observational

Intermountain Stewardship in Community Outpatient Settings-Resources & Engagement-Pediatrics

NCT07334795
View directory record Official record
Conditions
Respiratory Infection (for Example, Pneumonia, Bronchitis), Antibiotic, Antibiotic Duration, Antibiotic Prescribing for Acute Respiratory-tract Infections
Interventions
Implementation strategies including training & education, EMR tools, audit & feedback reports, and facilitation
Other
Lead sponsor
Intermountain Health Care, Inc.
Other
Eligibility
6 Months to 17 Years
Enrollment
259,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Murray, Utah
Source: ClinicalTrials.gov public record
Updated Mar 27, 2026 · Synced Oct 14, 2026, 5:35 PM EDT
Completed No phase listed Observational

Serologic Response to the SARS-CoV-2 (COVID-19) MRNA-1273 Vaccine in Select Subsets of Oncology Patients

NCT04854980
View directory record Official record
Conditions
Covid19, Cancer
Interventions
Blood Sample
Other
Lead sponsor
University of Rochester
Other
Eligibility
50 Years to 75 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Mar 30, 2025 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 3 Interventional Results available

A Trial to Reduce Pneumonia in Nursing Home Residents

NCT00975780
View directory record Official record
Conditions
Pneumonia, Lower Respiratory Tract Infection
Interventions
Enhanced Oral Care, Usual oral care
Other
Lead sponsor
Yale University
Other
Eligibility
65 Years and older
Enrollment
834 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Nov 20, 2014 · Synced Oct 14, 2026, 5:35 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Study About Modified RNA Vaccines Against Influenza in Healthy Adults

NCT06436703
View directory record Official record
Conditions
Influenza, Human
Interventions
Influenza ModRNA Vaccine, Quadrivalent Influenza Vaccine (QIV)
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
1,202 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
32
States / cities
Mobile, Alabama • Scottsdale, Arizona • Anaheim, California + 25 more
Source: ClinicalTrials.gov public record
Updated Jun 12, 2026 · Synced Oct 14, 2026, 5:35 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Evaluating the Dose, Safety, Tolerability, and Immunogenicity of Mosaic Hexavalent Influenza Vaccine VRCFLUMOS0116-00-VP (FluMos-v2) With and Without ALFQ Adjuvant in Healthy Adults

NCT06863142
View directory record Official record
Conditions
Influenza Prevention, Seasonal Influenza
Interventions
VRC-FLUMOS0116-00-VP, ALFQ
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 15, 2026 · Synced Oct 14, 2026, 5:35 PM EDT