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ClinicalTrials.gov public records Last synced Oct 16, 2026, 1:04 AM EDT

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Showing 745–768 of 3,927 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Respiratory Tract Infections (RTI) Clear all
Completed Phase 2 Interventional

Trivalent Baculovirus-expressed Influenza HA Vaccine in Adults With Non-Hodgkin's B-cell Lymphoma

NCT00307177
View directory record Official record
Conditions
Influenza
Interventions
Trivalent inactivated influenza vaccine, Trivalent Baculovirus-expressed Influenza HA vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 5, 2014 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Phase 1 Interventional

Study of Intravenous Administration of Allogeneic Adipose Stem Cells for COVID-19

NCT04486001
View directory record Official record
Conditions
Covid19
Interventions
PSC-04
Biological
Lead sponsor
Sorrento Therapeutics, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Mar 17, 2022 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Phase 2 Study to Evaluate the Safety, Tolerability, and Immune Response of AFX3772 Vaccine in Healthy Infants

NCT05412030
View directory record Official record
Conditions
Pneumonia, Bacterial, Pneumococcal Infections, Pneumonia, Pneumococcal
Interventions
AFX3772, Prevnar 13, Prevnar 20
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
42 Days to 90 Days
Enrollment
388 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
48
States / cities
Jonesboro, Arkansas • Gardena, California • Los Angeles, California + 39 more
Source: ClinicalTrials.gov public record
Updated Oct 9, 2026 · Synced Oct 16, 2026, 1:04 AM EDT
Terminated Phase 2 Interventional

Pemziviptadil (PB1046), a Long-acting, Sustained Release Human VIP Analogue, Intended to Provide Clinical Improvement to Hospitalized COVID-19 Patients at High Risk for Rapid Clinical Deterioration and Acute Respiratory Distress Syndrome (ARDS).

NCT04433546
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome, Coronavirus, Hypoxic Respiratory Failure, Hypoxemic Respiratory Failure, Respiratory Complication, Respiratory Insufficiency, Cardiac Dysfunction, Pneumonia, Pulmonary Edema, Pulmonary Inflammation, Respiratory Failure, Cytokine Storm, COVID 19, SARS-CoV-2, Cardiac Event, Cardiac Complication, Cardiac Failure, Cardiac Infarct
Interventions
Pemziviptadil (PB1046), Low Dose (10 mg) Control
Drug
Lead sponsor
PhaseBio Pharmaceuticals Inc.
Industry
Eligibility
18 Years to 85 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
4
States / cities
Jacksonville, Florida • Sarasota, Florida • Kansas City, Kansas + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 11, 2020 · Synced Oct 16, 2026, 1:04 AM EDT
Terminated Phase 2 Interventional Results available

Convalescent Plasma as Treatment for Subjects With Early COVID-19 Infection

NCT04456413
View directory record Official record
Conditions
COVID-19
Interventions
Convalescent Plasma, Best Supportive Care
Biological · Other
Lead sponsor
Hackensack Meridian Health
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Oct 10, 2023 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Phase 1 Interventional Results available

Study to Evaluate the PK of PO Omadacycline in Adults With Community-Acquired Bacterial Pneumonia

NCT04160260
View directory record Official record
Conditions
Community-acquired Pneumonia
Interventions
Omadacycline
Drug
Lead sponsor
Paratek Pharmaceuticals Inc
Industry
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
13
States / cities
Birmingham, Alabama • San Diego, California • Clearwater, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Nov 3, 2021 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Comparison of Immune Responses to Influenza Vaccine In Adults of Different Ages (SLVP015 2007-2017)

NCT01827462
View directory record Official record
Conditions
Influenza
Interventions
Trivalent, inactivated influenza vaccine (TIV), Quadrivalent, inactivated influenza vaccine (IIV4), High-Dose Trivalent, inactivated influenza vaccine (TIV High-Dose)
Biological
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 100 Years
Enrollment
136 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2017
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jul 11, 2017 · Synced Oct 16, 2026, 1:04 AM EDT
Recruiting No phase listed Observational

Respiratory Virus Sampling and Repository

NCT05266222
View directory record Official record
Conditions
Influenza, COVID-19
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
3 Years and older
Enrollment
20,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2031
U.S. locations
2
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Phase 2 Interventional Results available

Treatment With Investigational Convalescent Plasma and Measure Antibody Levels in Patients Hospitalized With COVID-19

NCT04434131
View directory record Official record
Conditions
COVID-19
Interventions
Convalescent Plasma
Drug
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Mar 8, 2023 · Synced Oct 16, 2026, 1:04 AM EDT
Active, not recruiting Phase 2 Interventional

COVID-FISETIN: Pilot in SARS-CoV-2 of Fisetin to Alleviate Dysfunction and Inflammation

NCT04476953
View directory record Official record
Conditions
Covid19
Interventions
Placebo, Fisetin
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 14, 2025 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Safety and Efficacy of Mucinex and IR Guaifenesin the Treatment of Symptoms of Acute Upper Respiratory Tract Infections

NCT01537081
View directory record Official record
Conditions
Acute Upper Respiratory Tract Infection
Interventions
Mucinex, Immediate-release Guaifenesin, Placebo
Drug
Lead sponsor
Reckitt Benckiser LLC
Industry
Eligibility
12 Years and older
Enrollment
2,810 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
43
States / cities
Hoover, Alabama • Bell Gardens, California • Harbor City, California + 38 more
Source: ClinicalTrials.gov public record
Updated Nov 14, 2013 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

SCALE-UP Utah: Community-Academic Partnership to Address COVID-19 Vaccination Rates Among Utah Community Health Centers

NCT04939519
View directory record Official record
Conditions
Covid19
Interventions
Text-Messaging (TM), Patient Navigation (PN)
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
65,300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Dec 12, 2025 · Synced Oct 16, 2026, 1:04 AM EDT
Completed No phase listed Observational

COVID EHR COHORT at the University of Wisconsin

NCT04506528
View directory record Official record
Conditions
COVID-19, Cancer, Nicotine Dependence, Pulmonary Disease, Cardiovascular Diseases, Immunosuppression Disorders
Interventions
Not listed
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
0 Years and older
Enrollment
1,634,381 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 31, 2022 · Synced Oct 16, 2026, 1:04 AM EDT
Terminated No phase listed Observational

Beaumont Quantitative Lung Function Imaging to Characterize Patients With SARS-COV 2

NCT04320511
View directory record Official record
Conditions
SARS-COV2, Severe Acute Respiratory Syndrome, COVID-19
Interventions
CT-V
Device
Lead sponsor
Corewell Health East
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 5, 2022 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Phase 2 Interventional Results available

Nitrite Supplementation in Long COVID Patients

NCT05618574
View directory record Official record
Conditions
Long COVID, Cardiorespiratory Fitness
Interventions
140 ml per day of Beet-It nitrate beverage (James White Drinks Ltd., Ipswich, UK), 210 ml of nitrate-depleted placebo
Dietary Supplement
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 16, 2026, 1:04 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Advance Care Planning: Communicating With Outpatients for Vital Informed Decision

NCT04660422
View directory record Official record
Conditions
Advanced Care Planning, Shared Decision Making, Video Decision Aids, Communication Skills, Advance Directives, Natural Language Processing, Covid19
Interventions
VitalTalk communication skills training, ACP Decisions Video Program, Intervention training:, Medical Record Review
Other
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
65 Years and older
Enrollment
42,019 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
New Hyde Park, New York
Source: ClinicalTrials.gov public record
Updated Jul 5, 2022 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Safety, Tolerability, and Efficacy of Anti-Spike (S) SARS-CoV-2 Monoclonal Antibodies for Hospitalized Adult Patients With COVID-19

NCT04426695
View directory record Official record
Conditions
COVID-19
Interventions
REGN10933+REGN10987 combination therapy, Placebo
Drug
Lead sponsor
Regeneron Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
2,252 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
96
States / cities
Birmingham, Alabama • Chandler, Arizona • Phoenix, Arizona + 70 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2023 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Phase 1Phase 2 Interventional Results available

TCAD vs. Monotherapy for Influenza A in Immunocompromised Patients

NCT00867139
View directory record Official record
Conditions
Influenza
Interventions
TCAD, Zanamivir or Oseltamivir, Open label treatment with TCAD
Drug · Other
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
1 Year and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
2
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 15, 2013 · Synced Oct 16, 2026, 1:04 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Nudges to Improve Health Behaviors That Limit COVID-19 Spread

NCT04379375
View directory record Official record
Conditions
Health Behavior, COVID-19
Interventions
Nudge
Behavioral
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 5, 2020 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Phase 2Phase 3 Interventional Results available

A Study of a Potential Oral Treatment to Prevent COVID-19 in Adults Who Are Exposed to Household Member(s) With a Confirmed Symptomatic COVID-19 Infection

NCT05047601
View directory record Official record
Conditions
COVID-19
Interventions
PF-07321332, Placebo for PF-07321332, Placebo for Ritonavir, Ritonavir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
2,954 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
64
States / cities
Pelham, Alabama • Tucson, Arizona • Fullerton, California + 36 more
Source: ClinicalTrials.gov public record
Updated May 6, 2023 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Trivalent, Live, Cold Adapted Influenza Vaccine (CAIV-T) Against Inactivated Influenza Vaccine (TIV) in Children 6-59 Months of Age

NCT00128167
View directory record Official record
Conditions
Influenza
Interventions
Liquid CAIV-T
Drug
Lead sponsor
MedImmune LLC
Industry
Eligibility
6 Months to 59 Months
Enrollment
8,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2005
U.S. locations
107
States / cities
Hoover, Alabama • Tuscaloosa, Alabama • Little Rock, Arkansas + 96 more
Source: ClinicalTrials.gov public record
Updated Sep 13, 2021 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

PHASE 1 SARS-COV-2-Spike-Ferritin-Nanoparticle (SpFN) Vaccine With ALFQ Adjuvant for Prevention of COVID-19

NCT04784767
View directory record Official record
Conditions
SARS-CoV-2 Infection
Interventions
25 µg SpFN_1B-06-PL + ALFQ (QS21 Adjuvant), Sodium chloride, USP, for injection (0.9% NaCl), 50 µg SpFN_1B-06-PL + ALFQ (QS21 Adjuvant)
Biological · Drug
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 55 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 17, 2025 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Phase 2 Interventional

A Study to Compare Different Drugs Used to Prevent Serious Bacterial Infections in HIV-Positive Children

NCT00000811
View directory record Official record
Conditions
Bacterial Infections, Pneumonia, Pneumocystis Carinii, HIV Infections
Interventions
Azithromycin, Atovaquone, Sulfamethoxazole-Trimethoprim
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
3 Months to 18 Months
Enrollment
690 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2001
U.S. locations
72
States / cities
Birmingham, Alabama • Mobile, Alabama • La Jolla, California + 46 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Oct 16, 2026, 1:04 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Addressing Vaccine Hesitancy and Increasing COVID-19 Vaccine Uptake Among African American Young Adults in the South

NCT05490329
View directory record Official record
Conditions
COVID-19, Vaccine Uptake
Interventions
Tough Talks COVID
Behavioral
Lead sponsor
Florida State University
Other
Eligibility
18 Years to 29 Years
Enrollment
360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Mar 28, 2025 · Synced Oct 16, 2026, 1:04 AM EDT