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ClinicalTrials.gov public records Last synced Oct 22, 2026, 4:51 AM EDT

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Showing 529–552 of 1,140 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Flu Clear all
Suspended Not applicable Interventional

ORCHARDS-AIR Study

NCT07298967
View directory record Official record
Conditions
Acute Respiratory Infection, Influenza-like Illness
Interventions
Nasal swab, Indoor air quality monitor
Diagnostic Test · Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
4 Years and older
Enrollment
422 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 12, 2026 · Synced Oct 22, 2026, 4:51 AM EDT
Completed No phase listed Observational

Pharmacokinetics of Oseltamivir in Newborns and Infants

NCT01388439
View directory record Official record
Conditions
Prematurity of Fetus
Interventions
Oseltamivir
Drug
Lead sponsor
St. Louis Children's Hospital
Other
Eligibility
Up to 6 Months
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 6, 2011 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Phase 3 Interventional Results available

A Study of Intravenously Administered Tamiflu (Oseltamivir) in Patients Over 13 Years of Age With Influenza

NCT01050257
View directory record Official record
Conditions
Influenza
Interventions
Oseltamivir IV, Oseltamivir Oral
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
13 Years and older
Enrollment
118 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
56
States / cities
Birmingham, Alabama • Montgomery, Alabama • Phoenix, Arizona + 47 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2013 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety of RIV4 Versus IIV4 in Pregnant Women

NCT03969641
View directory record Official record
Conditions
Safety, Adverse Event Following Immunisation, Birth Outcomes
Interventions
Quadrivalent Recombinant Influenza Vaccine, Quadrivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Female only
Enrollment
384 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
3
States / cities
Boston, Massachusetts • Durham, North Carolina • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 11, 2023 · Synced Oct 22, 2026, 4:51 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Acute Respiratory Illness Surveillance (AcRIS) With Mobile Application in a Low-Interventional Decentralized Study.

NCT04748445
View directory record Official record
Conditions
Healthy
Interventions
SARS-CoV-2/Influenza/RSV RT-PCR
Diagnostic Test
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
9,151 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Feb 23, 2024 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Testing Multiple Behavioral Science Strategies to Increase Flu-Shot Rates

NCT04565353
View directory record Official record
Conditions
Influenza, Human
Interventions
Flu shot text messages
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
74,811 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
2
States / cities
Danville, Pennsylvania • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 1, 2022 · Synced Oct 22, 2026, 4:51 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 22, 2026, 4:51 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of the Safety and Immunogenicity of H1N1 Vaccine

NCT01177202
View directory record Official record
Conditions
H1N1 Flu
Interventions
HAC1 Vaccine
Biological
Lead sponsor
Fraunhofer, Center for Molecular Biotechnology
Industry
Eligibility
18 Years to 50 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 26, 2016 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Young Adult Influenza Vaccine Immunogenicity Substudy

NCT00170508
View directory record Official record
Conditions
Influenza
Interventions
Fluzone®
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 23, 2013 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Demonstrate the Superiority of the Immune Response of Adjuvanted Influenza Vaccine Induced in an Adult Population

NCT00377585
View directory record Official record
Conditions
Influenza
Interventions
Fluarix, adjuvanted influenza vaccine
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
3,350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
10
States / cities
Clearwater, Florida • Coral Gables, Florida • Milford, Massachusetts + 7 more
Source: ClinicalTrials.gov public record
Updated Apr 24, 2017 · Synced Oct 22, 2026, 4:51 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

A Case Control Study of the Effectiveness of Q/LAIV Versus Inactivated Influenza Vaccine and No Vaccine in Subjects 2-17 Years of Age

NCT01997450
View directory record Official record
Conditions
Influenza Vaccine Effectiveness
Interventions
Not listed
Lead sponsor
MedImmune LLC
Industry
Eligibility
2 Years to 17 Years
Enrollment
4,121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
8
States / cities
Gainesville, Florida • Bloomington, Minnesota • Winston-Salem, North Carolina + 5 more
Source: ClinicalTrials.gov public record
Updated Mar 10, 2025 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Immunogenicity and Safety Study of Different Formulations of GlaxoSmithKline (GSK) Biologicals H7N1 Influenza Vaccine Administered to Adults 65 Years of Age and Older

NCT01949090
View directory record Official record
Conditions
Influenza
Interventions
Investigational H7N1 vaccine GSK2789869A, Placebo
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
65 Years and older
Enrollment
363 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
5
States / cities
Hollywood, Florida • Meridian, Idaho • Lenexa, Kansas + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 17, 2017 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Immune and Hormone Response to Influenza Vaccine

NCT01978262
View directory record Official record
Conditions
Healthy
Interventions
Seasonal Inactivated Influenza Vaccine
Biological
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years to 39 Years · Female only
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 27, 2018 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Study to Evaluate the Safety and Immune Response of Two-Doses of Candidate Influenza Vaccine GSK 1557484A in Adults

NCT00510874
View directory record Official record
Conditions
Influenza
Interventions
Pumarix™, Pandemrix ™
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 64 Years
Enrollment
780 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
7
States / cities
Huntsville, Alabama • Anaheim, California • Miami, Florida + 4 more
Source: ClinicalTrials.gov public record
Updated Aug 17, 2018 · Synced Oct 22, 2026, 4:51 AM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

A Study to Evaluate the Immune Response and Safety of a Vaccine Against Influenza in Adults 18-64 Years of Age

NCT07851246
View directory record Official record
Conditions
Influenza, Human
Interventions
mRNA Seasonal Flu vaccine, Comparator 1, Comparator 2
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 64 Years
Enrollment
3,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
12
States / cities
Glendale, Arizona • Tucson, Arizona • San Diego, California + 9 more
Source: ClinicalTrials.gov public record
Updated Oct 9, 2026 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Assess the Safety and Immunogenicity of Monovalent mRNA NA Vaccine in Adult Participants 18 Years of Age and Older

NCT05426174
View directory record Official record
Conditions
Influenza Immunization, Healthy Volunteers
Interventions
mRNA NA vaccine, High Dose Quadrivalent Influenza Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
233 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
6
States / cities
Huntsville, Alabama • Phoenix, Arizona • San Diego, California + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2025 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Atopic Dermatitis Research Network (ADRN) Influenza Vaccine Study

NCT01737710
View directory record Official record
Conditions
Dermatitis, Atopic
Interventions
Fluzone® Intradermal Vaccine, Fluzone® (Intramuscular) vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years · Female only
Enrollment
368 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
5
States / cities
Denver, Colorado • Chicago, Illinois • Boston, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 29, 2017 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of Recombinant Influenza Vaccine Containing Different H3 Antigens Without or With Adjuvant in Healthy Adult Subjects

NCT04451954
View directory record Official record
Conditions
Influenza Immunisation, Healthy Volunteers
Interventions
Quadrivalent RIV with H3 strain 1, Quadrivalent RIV with H3 strain 1 and adjuvant, Quadrivalent RIV with H3 strain 2, Quadrivalent RIV with H3 strain 2 and adjuvant, Quadrivalent RIV with 2018-2019 NH H3 strain, Quadrivalent RIV with 2018-2019 NH H3 strain and adjuvant
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
5
States / cities
San Diego, California • Melbourne, Florida • Orlando, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 17, 2025 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Immunogenicity of GSK Biologicals' Seasonal Influenza Vaccine in Children

NCT01198756
View directory record Official record
Conditions
Influenza
Interventions
Quadrivalent seasonal influenza vaccine GSK2282512A, Fluarix™ VB, Fluarix™ YB
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
6 Months to 17 Years
Enrollment
3,109 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
16
States / cities
Chandler, Arizona • Scottsdale, Arizona • Harrisburg, Arkansas + 13 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2018 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Phase 3 Interventional

Safety and Efficacy Study of Nitazoxanide in the Treatment of Acute Uncomplicated Influenza

NCT01610245
View directory record Official record
Conditions
Influenza
Interventions
Nitazoxanide, Oseltamivir, Placebo Oral Tablet, Placebo Oral Capsule
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
13 Years to 65 Years
Enrollment
1,941 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
136
States / cities
Birmingham, Alabama • Dothan, Alabama • Hoover, Alabama + 121 more
Source: ClinicalTrials.gov public record
Updated Mar 29, 2018 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Comparison of One Versus Two Doses of Influenza Vaccine in Children 5-8 Years of Age

NCT00158665
View directory record Official record
Conditions
Influenza
Interventions
2 0.5 ml doses of '04-05 Trivalent Influenza Vaccine
Biological
Lead sponsor
Kaiser Permanente
Other
Eligibility
5 Years to 8 Years
Enrollment
280 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 13, 2017 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Phase 1 Interventional

Phase I Open-Label Study of Recombinant DNA Plasmid Vaccine, VRC-AVIDNA036-00-VP, Encoding for Influenza Virus H5 Hemagglutinin Protein Given Intradermally

NCT00489931
View directory record Official record
Conditions
Influenza A Virus, H5N1 Subtype, Influenza A Virus, Influenzavirus A, Orthomyxovirdae, H5N1 Virus
Interventions
VRC-AVIDNA036-00-VP
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 60 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Phase 3 Interventional

Phase 3 Efficacy and Safety Study of Favipiravir for Treatment of Uncomplicated Influenza in Adults

NCT02008344
View directory record Official record
Conditions
Influenza
Interventions
favipiravir, placebo
Drug
Lead sponsor
MDVI, LLC
Industry
Eligibility
18 Years to 80 Years
Enrollment
1,161 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
147
States / cities
Birmingham, Alabama • Huntsville, Alabama • Camp Verde, Arizona + 123 more
Source: ClinicalTrials.gov public record
Updated Nov 11, 2015 · Synced Oct 22, 2026, 4:51 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Eldery High Dose TIV 2005

NCT00115531
View directory record Official record
Conditions
Influenza
Interventions
Trivalent inactivated influenza vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
65 Years and older
Enrollment
414 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
5
States / cities
Iowa City, Iowa • Baltimore, Maryland • St Louis, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2014 · Synced Oct 22, 2026, 4:51 AM EDT