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ClinicalTrials.gov public records Last synced Oct 17, 2026, 12:10 PM EDT

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Showing 817–840 of 1,125 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Influenza Virus Vaccine Clear all
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of mRNA-1345 Vaccine Targeting Respiratory Syncytial Virus (RSV) in Adults ≥50 Years of Age

NCT05330975
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
Placebo, mRNA-1345, Afluria® Quadrivalent, mRNA-1273.214
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
50 Years and older
Enrollment
3,317 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
62
States / cities
Birmingham, Alabama • Tucson, Arizona • Garden Grove, California + 51 more
Source: ClinicalTrials.gov public record
Updated Dec 30, 2025 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Immunologic Response to Influenza Vaccination in Children and Adolescents

NCT03614975
View directory record Official record
Conditions
Influenza, Human, Immune Response
Interventions
Flucelvax inactivated influenza vaccine, Fluzone inactivated influenza vaccine
Biological
Lead sponsor
Richard Zimmerman MD
Other
Eligibility
4 Years to 20 Years
Enrollment
166 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 18, 2020 · Synced Oct 17, 2026, 12:10 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Assessment of Self-Collected Sample Compared to Clinician Collected Sample in COVID-19 and Influenza Program

NCT04681950
View directory record Official record
Conditions
Subjects Possibly Exposed to COVID-19
Interventions
Not listed
Lead sponsor
Biocerna LLC
Industry
Eligibility
Not listed
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Fulton, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 23, 2020 · Synced Oct 17, 2026, 12:10 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Elderly Influenza Vaccine Immunogenicity Substudy

NCT00170482
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
65 Years to 99 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 28, 2019 · Synced Oct 17, 2026, 12:10 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Influenza Vaccine in Lung Transplant Patients - Persistence of Antibodies Beyond the Season

NCT04530786
View directory record Official record
Conditions
Influenza
Interventions
Influenza vaccine
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 23, 2020 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Comparison of the Immunogenicity, Safety and Reactogenicity of FluBlok, To a Licensed Vaccine In Elderly Adults

NCT00395174
View directory record Official record
Conditions
Influenza
Interventions
Influenza Vaccination
Biological
Lead sponsor
Protein Sciences Corporation
Industry
Eligibility
65 Years and older
Enrollment
870 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
7
States / cities
Baltimore, Maryland • Rochester, Minnesota • Shrewsbury, New Jersey + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 17, 2009 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

FluSAFE: Flu SMS Alerts to Freeze Exposure

NCT03274310
View directory record Official record
Conditions
Influenza, Acute Respiratory Infection, Influenza-like Illness
Interventions
Educational text messages
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
Not listed
Enrollment
1,918 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 16, 2025 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Influenza Vaccine in Pediatric Transplant Subjects

NCT00133510
View directory record Official record
Conditions
Influenza
Interventions
Trivalent Subviron Influenza vaccine (Fluzone)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Months to 17 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2006
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Oct 17, 2026, 12:10 PM EDT
Completed No phase listed Observational

QuickVue Influenza A + B Test Field Study

NCT03417869
View directory record Official record
Conditions
Influenza A, Influenza B
Interventions
QuickVue Influenza A+B
Device
Lead sponsor
Quidel Corporation
Industry
Eligibility
Not listed
Enrollment
1,381 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
5
States / cities
Phoenix, Arizona • Rochester, New York • Belton, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 20, 2018 · Synced Oct 17, 2026, 12:10 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers Results available

Response to Influenza Vaccine During Pregnancy

NCT03888989
View directory record Official record
Conditions
Influenza
Interventions
Quadrivalent inactivated influenza vaccine (IIV)
Biological
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 49 Years · Female only
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 17, 2025 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

H5 Adult - Chiron Study of Bird Flu Vaccine

NCT00280033
View directory record Official record
Conditions
Influenza
Interventions
Aluminum hydroxide, Inactivated Influenza A/H5N1 Vaccine (Chiron), MF-59, Placebo
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
394 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
4
States / cities
Stanford, California • St Louis, Missouri • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 13, 2013 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Assessment of CR8020, a Monoclonal Antibody Against Influenza A Viruses

NCT01756950
View directory record Official record
Conditions
Influenza
Interventions
2 mg/kg CR8020, 5 mg/kg CR8020, 15 mg/kg CR8020, 30 mg/kg CR8020, 50 mg/kg CR8020, Placebo
Biological
Lead sponsor
Crucell Holland BV
Industry
Eligibility
18 Years to 50 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Dec 19, 2013 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Study Comparing Immune Response to, and Safety of, Fluviral and Fluzone Influenza Vaccines in Persons 50 y.o. and Over

NCT00232947
View directory record Official record
Conditions
Influenza
Interventions
Influenza virus vaccine (Fluviral), Influenza virus vaccine (Fluzone)
Biological
Lead sponsor
ID Biomedical Corporation, Quebec
Industry
Eligibility
50 Years and older
Enrollment
900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
10
States / cities
Pembroke Pines, Florida • Atlanta, Georgia • Chicago, Illinois + 7 more
Source: ClinicalTrials.gov public record
Updated Jan 22, 2007 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Phase 1 Interventional

A Pharmacokinetic/Pharmacodynamic Study of Oseltamivir in Immunocompromised Children With Confirmed Influenza Infection

NCT01715909
View directory record Official record
Conditions
Influenza
Interventions
Oseltamivir
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
Up to 12 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
7
States / cities
Palo Alto, California • Aurora, Colorado • Boston, Massachusetts + 4 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2018 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Not applicable Interventional

The Effect of a Planning Prompt on Seasonal Influenza Vaccination Rates

NCT01207232
View directory record Official record
Conditions
Seasonal Influenza
Interventions
Planning Prompt, Control Condition
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
3,272 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 22, 2010 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Dose, Safety, Tolerability and Immunogenicity of an Influenza H1 Stabilized Stem Ferritin Vaccine in Healthy Adults

NCT03814720
View directory record Official record
Conditions
Influenza Infection
Interventions
VRC-FLUNPF099-00-VP (H1ssF_3928)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 29, 2022 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Fluzone® Quadrivalent, Flublok® Quadrivalent, and Fluzone® High-Dose, Influenza Vaccines, 2018-2019 Formulations

NCT03617523
View directory record Official record
Conditions
Influenza
Interventions
Fluzone Quadrivalent vaccine, 2018-2019 formulation, Flublok Quadrivalent vaccine, 2018-2019 formulation, Fluzone High-Dose vaccine, 2018-2019 formulation
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months and older
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
3
States / cities
Bardstown, Kentucky • Metairie, Louisiana • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 29, 2022 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Interferon as a Mucosal Adjuvant for Influenza Vaccine Given Intranasally

NCT00436046
View directory record Official record
Conditions
Influenza
Interventions
Trivalent inactivated influenza virus vaccine (2006-2007 formulation), Type 1 interferon
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 13, 2011 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Diesel Exhaust Followed by Administration of Nasal Spray Flu Vaccine on Individuals With & Without Allergies

NCT00617110
View directory record Official record
Conditions
Allergic Rhinitis
Interventions
live attenuated influenza virus (LAIV) with clean air, LAIV and diesel exhaust particles
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 35 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2014
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 3, 2015 · Synced Oct 17, 2026, 12:10 PM EDT
Not listed Phase 2 Interventional

Offering Influenza and Pneumococcal Vaccine to Patients Being Evaluated in the Emergency Department

NCT00380679
View directory record Official record
Conditions
High Risk for Serious Influenza, High Risk for Pneumonia
Interventions
Influenza vaccination, Pneumococcal polysaccharide vaccination
Biological
Lead sponsor
Louisiana State University Health Sciences Center in New Orleans
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
2
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Sep 26, 2006 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Immunogenicity and Safety of Pandemic Influenza Vaccines in Adults Aged 18 - 49 Years Old

NCT01236040
View directory record Official record
Conditions
Influenza
Interventions
GSK Biologicals' investigational vaccine GSK2590066A, GSK Biologicals' investigational vaccine GSK2592984A, GSK Biologicals' investigational vaccine GSK2340274A, GSK Biologicals' investigational vaccine GSK2340273A, Placebo
Biological · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 49 Years
Enrollment
521 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
4
States / cities
Anaheim, California • Stockbridge, Georgia • Lenexa, Kansas + 1 more
Source: ClinicalTrials.gov public record
Updated May 10, 2017 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Senescent Immunity in Elders and Vaccine Responses (SILVER)

NCT04077424
View directory record Official record
Conditions
Flu Vaccine
Interventions
Fluzone-High Dose Quadrivalent, Fluad, Flublock
Biological
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
65 Years to 125 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 12, 2022 · Synced Oct 17, 2026, 12:10 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cell-Mediated Immune Responses to Influenza A/H5N1 Vaccine

NCT00311727
View directory record Official record
Conditions
Influenza
Interventions
Influenza A/H5N1
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
339 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
3
States / cities
Baltimore, Maryland • Rochester, New York • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 16, 2013 · Synced Oct 17, 2026, 12:10 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Th1 Response to Influenza: Aging and Vaccine Efficacy

NCT00396305
View directory record Official record
Conditions
Influenza
Interventions
Placebo, Trivalent Inactivated Influenza
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
21 Years and older
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Oct 17, 2026, 12:10 PM EDT