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Showing 1–24 of 996 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Influenza Infection Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Cellular and Humoral Immune Response to Primary and Secondary Immunization With Subvirion H5N1 Vaccines

NCT01086566
View directory record Official record
Conditions
Influenza
Interventions
Influenza Virus Vaccine, Monovalent A/H5N1 A/Indonesia/05/2005
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 31, 2015 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Half-Dose Flu Vaccine Study in Healthy Adults

NCT00006146
View directory record Official record
Conditions
Influenza
Interventions
Approved influenza virus vaccine.
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
840 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000
U.S. locations
6
States / cities
Torrance, California • College Park, Maryland • St Louis, Missouri + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 26, 2010 · Synced Jun 7, 2026, 5:49 AM EDT
Not listed Phase 1 Interventional

Regenerative Medicine for COVID-19 and Flu-Elicited ARDS Using Lomecel-B (RECOVER)

NCT04629105
View directory record Official record
Conditions
ARDS, Human, Covid19
Interventions
Longeveron Mesenchymal Stem Cells (LMSCs), Placebo
Biological · Other
Lead sponsor
Longeveron Inc.
Industry
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
3
States / cities
Miami, Florida • Baltimore, Maryland • Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 19, 2024 · Synced Jun 7, 2026, 5:49 AM EDT
Not listed Not applicable Interventional

Immunogenicity of Influenza Vaccine in Long Term Care

NCT02933723
View directory record Official record
Conditions
Influenza
Interventions
Blood Draw
Procedure
Lead sponsor
Insight Therapeutics, LLC
Other
Eligibility
65 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 8, 2021 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Shedding and Safety of Trivalent Influenza Virus Vaccine Live, Intranasal in Infants and Young Children

NCT00344305
View directory record Official record
Conditions
Healthy
Interventions
Trivalent influenza virus vaccine live, intranasal
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
6 Months to 59 Months
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
16
States / cities
Little Rock, Arkansas • Marietta, Georgia • Bardstown, Kentucky + 13 more
Source: ClinicalTrials.gov public record
Updated Jul 23, 2017 · Synced Jun 7, 2026, 5:49 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Comparison of Recombinant Influenza Vaccine Versus Standard Egg-Based Inactivated Influenza Vaccine in Adults 18-64 Years

NCT05514002
View directory record Official record
Conditions
Influenza, Human
Interventions
Fluzone Quadrivalent, Flublok Quadrivalent
Biological
Lead sponsor
Fatimah Dawood
Federal
Eligibility
18 Years to 64 Years
Enrollment
3,988 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
4
States / cities
Tucson, Arizona • Tallahassee, Florida • Houston, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 23, 2025 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Not applicable Interventional Results available

High-risk Influenza Vaccine Alert

NCT05492786
View directory record Official record
Conditions
Influenza
Interventions
Alert, Salient alert features, High-risk Text, Risk factors
Behavioral
Lead sponsor
Geisinger Clinic
Other
Eligibility
18 Years and older
Enrollment
80,452 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 29, 2024 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Control of Epidemic Influenza Through a School-based Influenza Vaccination Program

NCT00138294
View directory record Official record
Conditions
Influenza
Interventions
live attenuated and inactivated influenza vaccines
Biological
Lead sponsor
Baylor College of Medicine
Other
Eligibility
4 Years to 18 Years
Enrollment
29,255 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1998 – 2010
U.S. locations
2
States / cities
Temple, Texas • Waco, Texas
Source: ClinicalTrials.gov public record
Updated May 18, 2017 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Phase 2 Interventional Results available

High Dose Flu Vaccine in Treating Children Who Have Undergone Donor Stem Cell Transplant

NCT02860039
View directory record Official record
Conditions
Hematopoietic Cell Transplantation Recipient, Malignant Neoplasm, Influenza
Interventions
Trivalent Influenza Vaccine, Quadrivalent Influenza Vaccine, Laboratory Biomarker Analysis
Biological · Other
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
3 Years to 17 Years
Enrollment
170 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2024
U.S. locations
9
States / cities
San Francisco, California • Kansas City, Missouri • Cincinnati, Ohio + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 21, 2024 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Efficacy Study of Two Influenza Vaccines and Placebo in Healthy Adult Subjects

NCT00630331
View directory record Official record
Conditions
Influenza
Interventions
Cell culture-derived influenza vaccine, Egg-derived influenza virus vaccine, Placebo
Biological
Lead sponsor
Novartis Vaccines
Industry
Eligibility
18 Years to 49 Years
Enrollment
11,404 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
17
States / cities
Denver, Colorado • Pembroke Pines, Florida • South Miami, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated May 23, 2024 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Immunogenicity and Safety of FluBlok Trivalent Recombinant Hemagglutinin Influenza Vaccine in Healthy Pediatrics

NCT00336453
View directory record Official record
Conditions
Influenza
Interventions
Influenza Vaccination
Biological
Lead sponsor
Protein Sciences Corporation
Industry
Eligibility
6 Months to 59 Months
Enrollment
156 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
3
States / cities
Bardstown, Kentucky • St Louis, Missouri • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 16, 2009 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

REDucing Influenza Among University Students, University of California at Berkeley

NCT00448773
View directory record Official record
Conditions
Influenza-like Illness, Influenza
Interventions
Online education
Behavioral
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
17 Years and older
Enrollment
3,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Berkeley, California
Source: ClinicalTrials.gov public record
Updated Jan 6, 2010 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Effects of Wood Smoke Particles on Influenza-induced Nasal Inflammation in Normal Volunteers

NCT02183753
View directory record Official record
Conditions
Response of Viral Infection to Woodsmoke
Interventions
wood smoke, clean air
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 40 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 10, 2015 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Not applicable Interventional

Seasonal Influenza Vaccination Reminders for Children With High-risk Conditions

NCT01431183
View directory record Official record
Conditions
Seasonal Influenza Vaccination
Interventions
Mailed influenza vaccination reminder notice
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
24 Months to 60 Months
Enrollment
3,618 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 8, 2011 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Influenza Antiviral DAS-181-F04 in Healthy Adults

NCT01651494
View directory record Official record
Conditions
Influenza
Interventions
DAS181, Placebo
Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 6, 2017 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Phase 4 Interventional Results available

Safety and Immunogenicity of Simultaneous Tdap and IIV in Pregnant Women

NCT02783170
View directory record Official record
Conditions
Pregnancy
Interventions
Tetanus, Diphtheria, and Pertussis Vaccine, 2016-2017 Quadrivalent Inactivated Influenza Vaccine, 2017-2018 Quadrivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
Duke University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
3
States / cities
Atlanta, Georgia • Durham, North Carolina • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 27, 2025 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Study to Investigate the Safety and Immunogenicity of the Quadrivalent Influenza mRNA Vaccines in Adults Aged 18 Years and Above

NCT06361875
View directory record Official record
Conditions
Influenza Immunization
Interventions
Quadrivalent Influenza mRNA Vaccine MRT5421, Quadrivalent Influenza mRNA Vaccine MRT5424, Quadrivalent Influenza mRNA Vaccine MRT5429, Quadrivalent Influenza Standard Dose Vaccine, Quadrivalent Influenza High-Dose Vaccine, Quadrivalent Recombinant Influenza Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
910 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
18
States / cities
Long Beach, California • San Diego, California • DeLand, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Jun 18, 2025 · Synced Jun 7, 2026, 5:49 AM EDT
Completed No phase listed Observational

Evaluation of the Labcorp COVID-19+Flu+RSV Test Home Collection Kit

NCT06008457
View directory record Official record
Conditions
COVID-19 Respiratory Infection, Influenza A, Influenza Type B, RSV Infection
Interventions
Labcorp COVID-19+Flu+RSV Test Home Collection Kit
Device
Lead sponsor
Sequenom, Inc.
Industry
Eligibility
2 Years to 89 Years
Enrollment
1,600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Pasadena, California
Source: ClinicalTrials.gov public record
Updated Jun 24, 2025 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Phase 2 Interventional

Efficacy and Safety of Norketotifen in Uncomplicated Influenza-like Illness

NCT04610047
View directory record Official record
Conditions
Influenza, Influenza -Like Illness
Interventions
Norketotifen, Placebo
Drug
Lead sponsor
Emergo Therapeutics, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
315 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
20
States / cities
Phoenix, Arizona • Los Angeles, California • DeBary, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Jan 29, 2023 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Immunogenicity and Safety of Seqirus Quadrivalent Influenza Vaccine (QIV) in a Pediatric Population 5 Through 17 Years of Age

NCT02545543
View directory record Official record
Conditions
Influenza, Human
Interventions
Seqirus QIV, Comparator QIV
Biological
Lead sponsor
Seqirus
Industry
Eligibility
5 Years to 17 Years
Enrollment
2,278 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
32
States / cities
Huntsville, Alabama • Madera, California • Ontario, California + 29 more
Source: ClinicalTrials.gov public record
Updated May 22, 2018 · Synced Jun 7, 2026, 5:49 AM EDT
Enrolling by invitation Phase 1 Interventional Accepts healthy volunteers

Rechallenge With a Low Pathogenicity Avian H10N7 Influenza Virus in Healthy Human Volunteers Previously Challenged With H10N7 Influenza

NCT07215871
View directory record Official record
Conditions
Influenza Infection, Infections, Respiratory Virus Infections, Respiratory Tract Infections, RNA Viruses, Orthomyxoviridae Infections, Viral Diseases
Interventions
A/Mallard/Ohio-99/MM4/1989 H10N7
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 55 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of A/H1N1-SOIV (Swine Flu) Vaccine With and Without Adjuvant in Children (3 to < 9 Years)

NCT00972816
View directory record Official record
Conditions
Influenza
Interventions
MF59-eH1N1
Biological
Lead sponsor
Novartis Vaccines
Industry
Eligibility
3 Years to 8 Years
Enrollment
1,357 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
34
States / cities
Downey, California • Madera, California • Paramount, California + 29 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2016 · Synced Jun 7, 2026, 5:49 AM EDT
Withdrawn Phase 1Phase 2 Interventional Accepts healthy volunteers

MAS-1 Adjuvanted Compared to Unadjuvanted Influenza Vaccines in the Elderly

NCT01623232
View directory record Official record
Conditions
Influenza Vaccines, Aged
Interventions
MAS-1 adjuvant and influenza HA antigen, standard dose, inactivated trivalent influenza vaccine (TIV)
Biological
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
65 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
4
States / cities
Palo Alto, California • Iowa City, Iowa • Minneapolis, Minnesota + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 25, 2012 · Synced Jun 7, 2026, 5:49 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Novartis H1N1 Vaccine in Pregnant Women

NCT00992719
View directory record Official record
Conditions
Influenza
Interventions
Inactivated H1N1 Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 39 Years · Female only
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
6
States / cities
Baltimore, Maryland • St Louis, Missouri • Durham, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 6, 2013 · Synced Jun 7, 2026, 5:49 AM EDT