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ClinicalTrials.gov public records Last synced Oct 15, 2026, 10:59 AM EDT

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Showing 601–624 of 1,158 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Influenza vaccine Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Incentives for Influenza Vaccination

NCT06300242
View directory record Official record
Conditions
Influenza Vaccination
Interventions
Reminders, Financial Incentive, Placebo
Behavioral · Other
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older
Enrollment
69,972 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Martinez, California
Source: ClinicalTrials.gov public record
Updated May 13, 2024 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Evaluate the Safety and Immunogenicity of GlaxoSmithKline (GSK) Biologicals' Influenza Vaccines GSK2654911A and GSK2654909A Administered to Adults 18 to 64 Years of Age

NCT01659086
View directory record Official record
Conditions
Influenza
Interventions
Investigational H9N2 vaccine GSK2654911A, Investigational H9N2 vaccine GSK2654909A, Placebo
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 64 Years
Enrollment
422 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
3
States / cities
Miami, Florida • Edison, New Jersey • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jun 18, 2018 · Synced Oct 15, 2026, 10:59 AM EDT
Active, not recruiting No phase listed Observational

Vaccine Responses in Cancer

NCT06605625
View directory record Official record
Conditions
Viral Vaccines
Interventions
Influenza vaccination, SARS-CoV-2 vaccine, Zoster Vaccine Recombinant
Biological
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
Not listed
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 28, 2025 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Spirulina Oral Supplement for Enhancing Host Resilience to Virus Infection

NCT05447078
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Immulina TM, Placebo
Drug · Dietary Supplement
Lead sponsor
University of Mississippi Medical Center
Other
Eligibility
18 Years and older
Enrollment
492 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

A Study of the Safety and Immunogenicity of High-Dose Quadrivalent Influenza Vaccine in Subjects Aged 65 Years and Older

NCT02553343
View directory record Official record
Conditions
Influenza
Interventions
High-dose quadrivalent influenza virus vaccine, High-dose influenza virus vaccine, High-dose trivalent inactivated influenza vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
65 Years and older
Enrollment
792 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
9
States / cities
Milford, Connecticut • Coral Gables, Florida • Wichita, Kansas + 6 more
Source: ClinicalTrials.gov public record
Updated Feb 9, 2018 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Infectivity, Replication & Immunogenicity of Live nH1N1 Vaccine

NCT01023776
View directory record Official record
Conditions
Influenza
Interventions
A/California/07/09 live monovalent H1N1 vaccine
Biological
Lead sponsor
University of Rochester
Other
Eligibility
18 Years to 32 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 23, 2015 · Synced Oct 15, 2026, 10:59 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Conversational Agent Vaccine Promotion RCT

NCT04884750
View directory record Official record
Conditions
Pandemics
Interventions
ECA-ACE Vaccination Promotion Intervention
Behavioral
Lead sponsor
Northeastern University
Other
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 22, 2023 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Immunogenicity of MEDI7510 in Older Adults

NCT02289820
View directory record Official record
Conditions
Respiratory Syncytial Virus (RSV)
Interventions
MEDI7510, IIV
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
60 Years to 99 Years
Enrollment
363 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
5
States / cities
Orlando, Florida • South Miami, Florida • Kansas City, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 15, 2018 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Sulforaphane (SFN) on Immune Response to Live Attenuated Influenza Virus in Smokers and Nonsmokers

NCT01269723
View directory record Official record
Conditions
Smoking
Interventions
Broccoli sprout homogenate, Alfalfa sprout homogenate
Dietary Supplement
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 40 Years
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 29, 2014 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Assess the Safety & Immunogenicity of Stored Inactivated Influenza H5N1 Virus Vaccine Given With & Without Stored MF59 Adjuvant

NCT02680002
View directory record Official record
Conditions
A/Vietnam/H5N1 Influenza Virus
Interventions
7.5 mcg H5N1 (stored as monobulk), 15 mcg H5N1 (stored as monobulk), 90 mcg H5N1 (stored as monobulk), 90 mcg H5N1 (stored in vials), MF59, MF59 (stored as monobulk)
Biological · Other
Lead sponsor
Biomedical Advanced Research and Development Authority
Federal
Eligibility
18 Years to 49 Years
Enrollment
422 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
6
States / cities
Atlanta, Georgia • Council Bluffs, Iowa • Lenexa, Kansas + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 31, 2020 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Not applicable Interventional

School Influenza Vaccine vs Standard of Care With Nested Trial of 2 Parent Notification Intensities

NCT01224301
View directory record Official record
Conditions
Immunizations, Vaccination, Influenza, School Health
Interventions
School based flu vaccine: Low intensity, School based flu vaccine: High intensity
Behavioral
Lead sponsor
Monroe County Department of Public Health
Other
Eligibility
4 Years to 13 Years
Enrollment
25,366 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Apr 4, 2012 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

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
Centers for Disease Control and Prevention
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 Jul 30, 2026 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Phase 1Phase 2 Interventional

Safety of and Immune Response to Two Influenza Vaccines in HIV Infected Children and Adolescents

NCT00091702
View directory record Official record
Conditions
HIV Infections, Influenza
Interventions
Cold-adapted live attenuated influenza vaccine (FluMist), Inactivated influenza vaccine (IAIV)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
5 Years to 17 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2006
U.S. locations
59
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 42 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2021 · Synced Oct 15, 2026, 10:59 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Fluarix/ FluLaval/ Fluarix Quadrivalent/ FluLaval Quadrivalent Vaccine Pregnancy Registry

NCT02148211
View directory record Official record
Conditions
Influenza
Interventions
Data collection
Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
Female only
Enrollment
507 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Wilmington, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 12, 2020 · Synced Oct 15, 2026, 10:59 AM EDT
Not yet recruiting Not applicable Interventional

Rule-Based High-Risk Flu

NCT07798882
View directory record Official record
Conditions
Influenza, Vaccination, Risk Reduction, Health Behavior, Health Promotion
Interventions
Risk reduction
Behavioral
Lead sponsor
Geisinger Clinic
Other
Eligibility
18 Years and older
Enrollment
51,215 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Oct 15, 2026, 10:59 AM EDT
Terminated Phase 3 Interventional Results available

A Study to Evaluate the Efficacy and Safety of Pimodivir in Combination With the Standard-of-Care Treatment in Adolescent, Adult, and Elderly Hospitalized Participants With Influenza A Infection

NCT03376321
View directory record Official record
Conditions
Influenza A
Interventions
Pimodivir 600 mg, Placebo, SOC Treatment
Drug · Other
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
13 Years to 85 Years
Enrollment
334 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
28
States / cities
Birmingham, Alabama • Jonesboro, Arkansas • Fresno, California + 23 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2025 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Study to Evaluate Safety and Immunogenicity of a Pandemic Flu H5 mRNA Vaccine in Healthy Adults Aged 18 Years and Older

NCT06727058
View directory record Official record
Conditions
Influenza Immunization
Interventions
Pandemic flu H5 mRNA vaccine, Placebo
Biological · Other
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
276 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
14
States / cities
La Mesa, California • DeLand, Florida • Lakeland, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Determine the Immunogenicity and Safety Profile of CSL Limited's Influenza Virus Vaccine Compared to a US Licensed Comparator Influenza Virus Vaccine in a Pediatric Population

NCT00959049
View directory record Official record
Conditions
Influenza
Interventions
CSL's Influenza Virus Vaccine (Afluria), Influenza Virus Vaccine (Fluzone)
Biological
Lead sponsor
Seqirus
Industry
Eligibility
6 Months to 17 Years
Enrollment
1,474 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
23
States / cities
Chandler, Arizona • Harrisburg, Arkansas • Jonesboro, Arkansas + 16 more
Source: ClinicalTrials.gov public record
Updated May 16, 2017 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Open Label Evaluation of H5N1 Vaccine at Vaccine Manufacturing Facilities

NCT00311649
View directory record Official record
Conditions
Influenza
Interventions
Inactivated Influenza A Vaccine A/H5N1
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
83 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Swiftwater, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 12, 2011 · Synced Oct 15, 2026, 10:59 AM EDT
Completed No phase listed Observational

Prospective Clinical Evaluation of COVID/Flu Detect™ Rapid Self-Test in Symptomatic Subjects for Non-Prescription Over-the-Counter (OTC) Use

NCT06734741
View directory record Official record
Conditions
COVID-19, Influenza A, Influenza B
Interventions
COVID/Flu Detect™ Rapid Self-Test
Diagnostic Test
Lead sponsor
InBios International, Inc.
Industry
Eligibility
2 Years and older
Enrollment
899 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
10
States / cities
Birmingham, Alabama • Miami, Florida • Boise, Idaho + 5 more
Source: ClinicalTrials.gov public record
Updated May 22, 2025 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluation of the Safety and Immunogenicity of a Live Attenuated Virus Vaccine for the Prevention of H2N3 Influenza

NCT01175122
View directory record Official record
Conditions
Influenza A Virus Infection
Interventions
H2N3 MO 2003/AA ca Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 42 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Feb 11, 2013 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Immunogenicity and Safety of Different Doses of Fluzone® Influenza

NCT00253734
View directory record Official record
Conditions
Influenza
Interventions
Fluzone® (IM), Fluzone®
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
217 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 3, 2013 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Not applicable Interventional Results available

Behavioral Economics to Improve Flu Vaccination Using EHR Nudges Replication

NCT06626321
View directory record Official record
Conditions
Behavior, Health, Flu, Flu Vaccination
Interventions
Pre-visit patient text messaging, Default pended order, Monthly peer comparison feedback, High risk bidirectional pre-visit text messaging
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
50 Years and older
Enrollment
26,248 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Lancaster, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 30, 2026 · Synced Oct 15, 2026, 10:59 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Study of Fluzone® High-Dose Vaccine Compared With Fluzone® Vaccine In Elderly Adults

NCT01427309
View directory record Official record
Conditions
Influenza
Interventions
High Dose Trivalent Inactivated Influenza Vaccine, Trivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
65 Years and older
Enrollment
31,989 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
105
States / cities
Mobile, Alabama • Chandler, Arizona • Glendale, Arizona + 88 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2015 · Synced Oct 15, 2026, 10:59 AM EDT