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ClinicalTrials.gov public records Last synced Oct 15, 2026, 11:36 AM EDT

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Showing 313–336 of 1,158 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Influenza Vaccine Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Non-integrated Costs Increase Effectiveness of Incentives

NCT03507231
View directory record Official record
Conditions
Control - No Incentive for Flu Vaccine, Direct Incentive, Indirect Incentive
Interventions
Email Message, Incentive for Vaccination, Incentive for completing a short survey
Behavioral
Lead sponsor
Carnegie Mellon University
Other
Eligibility
18 Years to 100 Years
Enrollment
12,531 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 25, 2018 · Synced Oct 15, 2026, 11:36 AM EDT
Completed No phase listed Observational

Influenza Vaccine in Lung Transplant Patients - Antibody

NCT04533139
View directory record Official record
Conditions
Influenza
Interventions
Influenza vaccine
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 23, 2020 · Synced Oct 15, 2026, 11:36 AM EDT
Completed No phase listed Observational

Cellular and Molecular Characterization of the Immune Response in Healthy NIH Employees atBaseline, and After Immunization With the H1N1 or Seasonal Influenza Vaccines

NCT01191853
View directory record Official record
Conditions
Healthy Volunteers, Influenza
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years and older
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 18, 2026 · Synced Oct 15, 2026, 11:36 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Trial to Describe the Safety and Immunogenicity of Fluzone®

NCT00524940
View directory record Official record
Conditions
Influenza
Interventions
Inactivated, Split-Virion Influenza Virus
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
124 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced Oct 15, 2026, 11:36 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Immune Responses to the Flu Shot During Pregnancy

NCT02148874
View directory record Official record
Conditions
Pregnancy
Interventions
influenza virus vaccination
Biological
Lead sponsor
Lisa Christian
Other
Eligibility
18 Years to 42 Years · Female only
Enrollment
287 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2019
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 24, 2019 · Synced Oct 15, 2026, 11:36 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of Synbiotics as Adjuvant to Influenza Vaccine in Elderly

NCT01304771
View directory record Official record
Conditions
Influenza
Interventions
Synbiotic AKSB
Biological
Lead sponsor
Mayo Clinic
Other
Eligibility
65 Years and older
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 20, 2012 · Synced Oct 15, 2026, 11:36 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Revaccination With Subunit Influenza A/Vietnam/1203/2004 (H5N1) Vaccine

NCT00240903
View directory record Official record
Conditions
Influenza
Interventions
Influenza A/Vietnam/1203/2004 (H5N1; sanofi pasteur)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Aug 12, 2011 · Synced Oct 15, 2026, 11:36 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Simultaneous RZV and aIIV4 Vaccination

NCT05007041
View directory record Official record
Conditions
Pain, Quality of Life, Injection Site Reaction, Adverse Drug Event
Interventions
FLUAD® Quadrivalent, Fluzone® High-Dose Quadrivalent, SHINGRIX®
Biological
Lead sponsor
Duke University
Other
Eligibility
65 Years and older
Enrollment
267 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
2
States / cities
Baltimore, Maryland • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 11, 2024 · Synced Oct 15, 2026, 11:36 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Influenza IMPRINT Cohort: Defining the Impact of Initial Influenza Exposure on Immunity in Infants

NCT05436184
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
Not listed
Enrollment
1,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2028
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 5, 2025 · Synced Oct 15, 2026, 11:36 AM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy of an H1N1 Influenza Vaccine in People With Asthma

NCT00978120
View directory record Official record
Conditions
H1N1 Influenza Virus
Interventions
H1N1 vaccine high dose, H1N1 vaccine low dose
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
12 Years and older
Enrollment
390 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
7
States / cities
Atlanta, Georgia • St Louis, Missouri • Winston-Salem, North Carolina + 4 more
Source: ClinicalTrials.gov public record
Updated Aug 10, 2012 · Synced Oct 15, 2026, 11:36 AM EDT
Terminated Phase 3 Interventional Results available

Intramuscular Peramivir in Subjects With Uncomplicated Acute Influenza

NCT00610935
View directory record Official record
Conditions
Influenza
Interventions
Peramivir, Placebo
Drug
Lead sponsor
BioCryst Pharmaceuticals
Industry
Eligibility
18 Years to 75 Years
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
96
States / cities
Millbrook, Alabama • Tuscaloosa, Alabama • Phoenix, Arizona + 80 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2021 · Synced Oct 15, 2026, 11:36 AM EDT
Completed Not applicable Interventional Results available

The Respiratory Protection Effectiveness Clinical Trial

NCT01249625
View directory record Official record
Conditions
Influenza, Respiratory Syncytial Viruses, Paramyxoviridae Infections, Coronavirus, Rhinovirus
Interventions
N95 Respirator, Medical/surgical mask
Device
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 100 Years
Enrollment
2,862 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2018
U.S. locations
7
States / cities
Aurora, Colorado • Denver, Colorado • Washington D.C., District of Columbia + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 25, 2019 · Synced Oct 15, 2026, 11:36 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of a Live-attenuated Universal Flu Vaccine Followed by an Inactivated Universal Flu Vaccine

NCT03300050
View directory record Official record
Conditions
Influenza, Vaccine
Interventions
cH8/1N1 LAIV, AS03-adjuvanted cH5/1N1 IIV, cH5/1N1 IIV, AS03-adjuvanted cH8/1N1 IIV, Normal saline, Phosphate buffered saline (PBS)
Biological
Lead sponsor
PATH
Other
Eligibility
18 Years to 39 Years
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
2
States / cities
Durham, North Carolina • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 21, 2021 · Synced Oct 15, 2026, 11:36 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of High-Dose Quadrivalent Influenza Vaccine in Participants ≥65 Years in the US

NCT03282240
View directory record Official record
Conditions
Influenza
Interventions
QIV-HD, Licensed TIV-HD1, Investigational TIV-HD2
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
65 Years and older
Enrollment
2,670 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
36
States / cities
Anaheim, California • Redding, California • San Diego, California + 29 more
Source: ClinicalTrials.gov public record
Updated Apr 7, 2022 · Synced Oct 15, 2026, 11:36 AM EDT
Completed No phase listed Observational

A Pilot Study of Influenza Viruses Isolated From Immunocompromised Children and Adolescents

NCT02352389
View directory record Official record
Conditions
Influenza, Human
Interventions
Blood sample, Nasal swab, Oropharyngeal swab, Stool sample, Symptom checklist
Other
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
Up to 21 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2022
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 12, 2023 · Synced Oct 15, 2026, 11:36 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Study to Assess Tolerability of the Trivalent Recombinant Vaccine in Individuals Aged 18 and Older Using the Vaccinees Perception of Injection Questionnaire

NCT06765187
View directory record Official record
Conditions
Influenza Immunization, Health Volunteers
Interventions
Trivalent Recombinant Influenza Vaccine
Biological
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
1,007 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Swiftwater, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 7, 2026 · Synced Oct 15, 2026, 11:36 AM EDT
Completed Not applicable Interventional

Adult Influenza Vaccination Text Message Reminders

NCT01942824
View directory record Official record
Conditions
Influenza Vaccination
Interventions
Text Messages
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
7,250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 24, 2014 · Synced Oct 15, 2026, 11:36 AM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Characterization of Humoral and Cellular Immune Responses Elicited by Influenza Vaccination in Healthy Adults

NCT05108818
View directory record Official record
Conditions
Influenza, Human
Interventions
Seasonal influenza vaccine
Biological
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
700 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Oct 15, 2026, 11:36 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pandemic Influenza Plasmid DNA Vaccines (Needle-Free)

NCT00694213
View directory record Official record
Conditions
Influenza
Interventions
VCL-IPM1, VCL-IPT1, PBS
Biological
Lead sponsor
Vical
Industry
Eligibility
18 Years to 45 Years
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
3
States / cities
San Diego, California • Baltimore, Maryland • Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated Feb 27, 2019 · Synced Oct 15, 2026, 11:36 AM EDT
Completed Not applicable Interventional Results available

SARS-CoV-2 and Influenza A/B in Point-of-Care and Non-Laboratory Settings

NCT06191393
View directory record Official record
Conditions
SARS-CoV-2 Infection, Influenza A, Influenza B
Interventions
Aptitude Medical Systems Metrix COVID/Flu Test
Diagnostic Test
Lead sponsor
Aptitude Medical Systems
Industry
Eligibility
2 Years and older
Enrollment
614 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
3
States / cities
Trussville, Alabama • Goleta, California • Chelmsford, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 13, 2025 · Synced Oct 15, 2026, 11:36 AM EDT
Completed No phase listed Observational

Collection and Extraction of Respiratory Specimens

NCT01083511
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
QIAGEN Gaithersburg, Inc
Industry
Eligibility
Not listed
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
3
States / cities
Tucson, Arizona • Chapel Hill, North Carolina • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 14, 2014 · Synced Oct 15, 2026, 11:36 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Entolimod on Immunosenescence in Healthy Geriatric Subjects Receiving Influenza Vaccination

NCT04176133
View directory record Official record
Conditions
Healthy
Interventions
Entolimod, Placebo, Influenza vaccine
Drug
Lead sponsor
Robert J. Pignolo
Other
Eligibility
65 Years and older
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 22, 2023 · Synced Oct 15, 2026, 11:36 AM EDT
Completed Early Phase 1 Interventional

A Study of Acute Respiratory Infections in Global Outpatient Setting

NCT05148780
View directory record Official record
Conditions
Acute Respiratory Infection
Interventions
Nasal Swab Sample
Diagnostic Test
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years and older
Enrollment
245 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
39
States / cities
Birmingham, Alabama • Guntersville, Alabama • Mesa, Arizona + 30 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2025 · Synced Oct 15, 2026, 11:36 AM EDT
Completed Phase 1 Interventional

Trial to Evaluate the Safety, Tolerability, and Immunogenicity of a Mosaic Hexavalent Influenza Vaccine VRC-FLUMOS0116-00-VP (FluMos-v2) in Healthy Adults

NCT05968989
View directory record Official record
Conditions
Influenza
Interventions
VRC-FLUMOS0116-00-VP( FLUMos-v2)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Oct 15, 2026, 11:36 AM EDT