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ClinicalTrials.gov public records Last synced Oct 14, 2026, 9:59 PM EDT

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Showing 313–336 of 350 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: TIV (Fluzone) Influenza Vaccination Clear all
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 14, 2026, 9:59 PM EDT
Completed No phase listed Observational Results available

This Study Intends to Describe the Characteristics of Patients Given the Pfizer-BioNTech Bivalent mRNA COVID-19 Vaccine and Any Commercially Available Influenza Vaccines at the Same Time Versus at Different Times.

NCT05858450
View directory record Official record
Conditions
Influenza, Human, COVID-19
Interventions
Comirnaty, Quadrivalent Influenza Vaccine
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
3,442,996 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 20, 2024 · Synced Oct 14, 2026, 9:59 PM 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 9, 2011 · Synced Oct 14, 2026, 9:59 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

H5N1 (Clade 2) Vaccination of Adults and Elderly

NCT00680069
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
19 Years to 99 Years
Enrollment
517 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
8
States / cities
Stanford, California • Iowa City, Iowa • Baltimore, Maryland + 5 more
Source: ClinicalTrials.gov public record
Updated Dec 30, 2016 · Synced Oct 14, 2026, 9:59 PM EDT
Completed Phase 3 Interventional Results available

Study to Assess the Effect of Tezepelumab on the Immune Response to Influenza Vaccination in Participants With Asthma

NCT05062759
View directory record Official record
Conditions
Moderate to Severe Asthma
Interventions
Tezepelumab, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
12 Years to 21 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
15
States / cities
Bakersfield, California • Huntington Beach, California • Miami, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2023 · Synced Oct 14, 2026, 9:59 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Annual Study for Serum Collection for Immunogenicity and Safety Evaluation in Healthy Children Receiving Fluzone®

NCT00755274
View directory record Official record
Conditions
Influenza, Orthomyxoviridae Infections
Interventions
Influenza Virus Vaccine No Preservative: Pediatric Dose
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months to 5 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced Oct 14, 2026, 9:59 PM EDT
Terminated Phase 1 Interventional

Response to Influenza Vaccine in Patients With Non-Hematologic Malignancies Receiving Chemotherapy

NCT01695733
View directory record Official record
Conditions
Neoplasms
Interventions
trivalent influenza vaccine
Biological
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 31, 2018 · Synced Oct 14, 2026, 9:59 PM 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 24, 2024 · Synced Oct 14, 2026, 9:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Flu Shot Pre-visit Questionnaire

NCT05508698
View directory record Official record
Conditions
Influenza
Interventions
Precommitment Nudge, Salience
Behavioral
Lead sponsor
Geisinger Clinic
Other
Eligibility
18 Years and older
Enrollment
230,962 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 25, 2023 · Synced Oct 14, 2026, 9:59 PM EDT
Completed Not applicable Interventional Results available

Nudging Flu Vaccination by Making it Easy for Patients to Schedule a Flu Shot

NCT05493787
View directory record Official record
Conditions
Influenza
Interventions
Reminder
Behavioral
Lead sponsor
Geisinger Clinic
Other
Eligibility
18 Years and older
Enrollment
139,503 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 30, 2024 · Synced Oct 14, 2026, 9:59 PM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Flucelvax Pregnancy Registry

NCT02258178
View directory record Official record
Conditions
Pregnant Women, Influenza
Interventions
Flucelvax (cTIV)
Biological
Lead sponsor
Seqirus
Industry
Eligibility
18 Years and older · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
1
States / cities
Wilmington, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 5, 2017 · Synced Oct 14, 2026, 9:59 PM 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 14, 2026, 9:59 PM EDT
Completed Not applicable Interventional Results available

Study to Evaluate Impact of School-based Influenza Vaccination on School Populations

NCT00844051
View directory record Official record
Conditions
Influenza
Interventions
School-based influenza vaccination program
Biological
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
4 Years to 18 Years
Enrollment
4,455 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 12, 2016 · Synced Oct 14, 2026, 9:59 PM EDT
Completed Phase 4 Interventional

Adjuvanted Influenza Vaccination in U.S. Nursing Homes

NCT02882100
View directory record Official record
Conditions
Influenza, Influenza-like Illness
Interventions
adjuvanted trivalent influenza vaccine, trivalent influenza vaccine
Biological
Lead sponsor
Insight Therapeutics, LLC
Other
Eligibility
65 Years and older
Enrollment
823 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 15, 2023 · Synced Oct 14, 2026, 9:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Combining Entertainment & Influenza Education for Pediatric Patients

NCT01788514
View directory record Official record
Conditions
Influenza
Interventions
Videogame
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
8 Years to 17 Years
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Mineola, New York
Source: ClinicalTrials.gov public record
Updated Feb 6, 2019 · Synced Oct 14, 2026, 9:59 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Assessing Choice in the Employer Setting (ACES) Study

NCT00808808
View directory record Official record
Conditions
Healthy
Interventions
Choice of TIV or FluMist with baseline advertisement, Choice of TIV or FluMist with enhanced advertisement and incentives, Control - Usual care offering TIV only with baseline advertisement
Biological · Other
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years and older
Enrollment
4,411 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
47
States / cities
Chatsworth, California • Novato, California • Sacramento, California + 34 more
Source: ClinicalTrials.gov public record
Updated Nov 20, 2013 · Synced Oct 14, 2026, 9:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of a Multilevel Intervention on Adult COVID-19 and Influenza Vaccination Rate

NCT06646406
View directory record Official record
Conditions
COVID-19 Immunisation, Influenza Vaccine
Interventions
Patient letter and clinician communication
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
19 Years and older
Enrollment
114,165 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
2
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 5, 2025 · Synced Oct 14, 2026, 9:59 PM 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 14, 2026, 9:59 PM EDT
Recruiting No phase listed Observational

Response to Influenza Vaccination in Pediatric Oncology Patients

NCT05384288
View directory record Official record
Conditions
Hematologic Malignancy, Pediatric Cancer, Transplant-Related Cancer
Interventions
Not listed
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
Up to 18 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2029
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 12, 2026 · Synced Oct 14, 2026, 9:59 PM 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 14, 2026, 9:59 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Evaluate Immunogenicity, Safety and Tolerability of Adjuvanted and Non-Adjuvanted H2N3 Influenza Vaccines in Adults

NCT05875961
View directory record Official record
Conditions
Influenza, Human, Infections, Respiratory Tract Infections, Virus Diseases, Infection Viral
Interventions
Low dose A/H2N3c + standard dose MF59, Intermediate dose A/H2N3c + standard dose MF59, High dose A/H2N3c + standard dose MF59, High dose A/H2N3c non-adjuvanted, Lowest dose A/H2N3c + high dose MF59, Low dose A/H2N3c + high dose MF59
Biological
Lead sponsor
Seqirus
Industry
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
3
States / cities
Rockville, Maryland • Lincoln, Nebraska • Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Oct 14, 2026, 9:59 PM EDT
Completed Not applicable Interventional

Influenza Vaccine Randomized Educational Trial: Adult

NCT02907645
View directory record Official record
Conditions
Vaccination, Influenza
Interventions
Local educational information, National educational information
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older · Male only
Enrollment
222 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 27, 2017 · Synced Oct 14, 2026, 9:59 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Post Marking Study to Evaluate the Safety of FluMist in Children

NCT00569894
View directory record Official record
Conditions
Healthy
Interventions
FLuMist, TIV (Injection), Unvaccinated Control
Biological · Other
Lead sponsor
MedImmune LLC
Industry
Eligibility
24 Months to 59 Months
Enrollment
29,296 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Mar 8, 2012 · Synced Oct 14, 2026, 9:59 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Project IMPACT Immunizations (IMProving America's Communities Together)

NCT02584036
View directory record Official record
Conditions
Influenza
Interventions
Vaccine administration by a pharmacist, Unmet vaccination needs identified and met, Vaccination forecast review and patient education
Biological · Behavioral
Lead sponsor
American Pharmacists Association Foundation
Other
Eligibility
18 Years and older
Enrollment
1,080 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
8
States / cities
Belfair, Washington • Cheney, Washington • Eatonville, Washington + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2016 · Synced Oct 14, 2026, 9:59 PM EDT