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ClinicalTrials.gov public records Last synced Oct 6, 2026, 10:09 AM EDT

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Showing 25–48 of 1,121 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Influenza virus vaccine Clear all
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Find the Dose and Assess the Immune Response and Safety of a Vaccine Against Influenza in Healthy Younger and Older Adults

NCT06431607
View directory record Official record
Conditions
Influenza, Human
Interventions
F2G22B/DL001Z, F2H23D/DL001Z-NH, F2H23B/DL001Z-NH, F2H23H/DL001Z, FDQ23A-NH (Flu D-QIV), GSK5800544A, Flu D-TIV, F2H23A/DL001Z-NH, F2H23G/DL001Z, Fluzone HD Quadrivalent, Fluzone HD
Biological · Combination Product
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 85 Years
Enrollment
845 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
18
States / cities
Hialeah, Florida • Miami, Florida • Chicago, Illinois + 14 more
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Oct 6, 2026, 10:09 AM 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 6, 2026, 10:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immunogenicity of Cam2020 M2SR H3N2 Monovalent Influenza Vaccine Alone or With Licensed IIV in Older Adults

NCT05163847
View directory record Official record
Conditions
Influenza Vaccine
Interventions
Cam2020 M2SR H3N2 influenza vaccine, Fluzone HD IIV, IN Placebo, IM Placebo
Biological · Other
Lead sponsor
FluGen Inc
Industry
Eligibility
65 Years to 85 Years
Enrollment
303 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
6
States / cities
Port Orange, Florida • Meridian, Idaho • Lenexa, Kansas + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 14, 2022 · Synced Oct 6, 2026, 10:09 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Study to Evaluate the Safety of a Bivalent Vaccine of New 6:2 Influenza Virus Reassortants in Healthy Adults

NCT00125944
View directory record Official record
Conditions
Healthy, Influenza
Interventions
FluMist
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 49 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
4
States / cities
San Diego, California • Daytona Beach, Florida • Portland, Oregon + 1 more
Source: ClinicalTrials.gov public record
Updated May 9, 2007 · Synced Oct 6, 2026, 10:09 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Trial to Evaluate Safety and Immunogenicity of Trivalent Seasonal Influenza Virus-Like Particle (VLP) Vaccine (Recombinant)

NCT00903552
View directory record Official record
Conditions
Seasonal Influenza
Interventions
Influenza VLP Vaccine, Placebo
Biological
Lead sponsor
Novavax
Industry
Eligibility
18 Years to 49 Years
Enrollment
221 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
2
States / cities
Pembroke Pines, Florida • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 18, 2013 · Synced Oct 6, 2026, 10:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Study of the Safety and Immunogenicity of NasoVAX Extension

NCT03760549
View directory record Official record
Conditions
Influenza
Interventions
Subjects were administered NasoVAX high dose
Drug
Lead sponsor
Altimmune, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Rockville, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 19, 2025 · Synced Oct 6, 2026, 10:09 AM EDT
Completed Phase 1 Interventional

Testing the AVI-7100 Flu Drug in Healthy Volunteers

NCT01747148
View directory record Official record
Conditions
Influenza
Interventions
AVI-7100 versus placebo
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 60 Years
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 26, 2017 · Synced Oct 6, 2026, 10:09 AM EDT
Terminated No phase listed Observational

Acute Viral Respiratory Infections in Elderly

NCT00170495
View directory record Official record
Conditions
Respiratory Infections, Acute
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
65 Years and older
Enrollment
3,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Oct 6, 2026, 10:09 AM EDT
Completed Phase 1 Interventional

VRC 307: A Double-Blind, Randomized Phase I Study of the Safety and Immunogenicity of a Prime-Boost Schedule of the Investigational DNA Trivalent Influenza Vaccine, VRC-FLUDNA047-00-VP, Followed by the 2008/2009 Seasonal Influenza Trivalent Inactivat...

NCT00858611
View directory record Official record
Conditions
Influenza, Human
Interventions
VRC-FLUDNA047-00-VP, Flulaval (Registered) Seasonal Influenza Vaccine
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 6, 2026, 10:09 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Study To Evaluate the Safety of Bivalent Vaccine

NCT00325481
View directory record Official record
Conditions
Healthy
Interventions
FluMist
Drug
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 49 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
3
States / cities
Daytona Beach, Florida • Portland, Oregon • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jul 18, 2007 · Synced Oct 6, 2026, 10:09 AM EDT
Recruiting Phase 2 Interventional

High vs. Standard Dose Influenza Vaccines in Lung Transplant (Repeater)

NCT07192458
View directory record Official record
Conditions
Immunization; Infection|Transplantation Infection|Influenza, Influenza
Interventions
Fluzone High Dose Inactivated Influenza Vaccine, Fluzone Standard Dose Inactivated Influenza Vaccine
Biological
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 7, 2025 · Synced Oct 6, 2026, 10:09 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Immunogenicity, Safety and Tolerability of CSL Limited Inactivated Influenza Vaccine in Adults

NCT00333398
View directory record Official record
Conditions
Influenza
Interventions
CSL Trivalent Inactivated Influenza Vaccine - Thimerosal-free, CSL Trivalent Inactivated Influenza Vaccine with Thimerosal, Placebo with Thimerosal
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
1,359 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
10
States / cities
Stanford, California • Iowa City, Iowa • Baltimore, Maryland + 7 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Oct 6, 2026, 10:09 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Optimizing Lymphatic Pumping for Influenza Vaccine Responses in Vulnerable Populations

NCT07786467
View directory record Official record
Conditions
No Disease or Condition is Being Directly Studied, The Focus of the Study in Healthy Volunteers
Interventions
Osteopathic manipulation, Sham
Other
Lead sponsor
Lake Erie College of Osteopathic Medicine
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Erie, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Oct 6, 2026, 10:09 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study on the Incidence of Influenza and Its Complications, in Subjects Aged 50 Years and Over Vaccinated With Fluarix™

NCT00377611
View directory record Official record
Conditions
Influenza
Interventions
Fluarix™
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
50 Years and older
Enrollment
3,054 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
9
States / cities
Mobile, Alabama • Delray Beach, Florida • Pembroke Pines, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 9, 2018 · Synced Oct 6, 2026, 10:09 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Efficacy, Safety, and Immunogenicity of a Plant-Derived Quadrivalent Virus-Like Particles (VLPs) Influenza Vaccine in Adults

NCT03301051
View directory record Official record
Conditions
Virus Diseases, RNA Virus Infections, Respiratory Tract Diseases, Respiratory Tract Infections, Influenza
Interventions
Quadrivalent VLP Vaccine, Placebo
Biological
Lead sponsor
Medicago
Industry
Eligibility
18 Years to 64 Years
Enrollment
10,160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
29
States / cities
Mobile, Alabama • Anaheim, California • Milford, Connecticut + 23 more
Source: ClinicalTrials.gov public record
Updated Aug 14, 2023 · Synced Oct 6, 2026, 10:09 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Prospective Trial of Vaccine Responses Against Pneumococcus and Influenza in Adult Cancer Patients 65 Years of Age and Older

NCT00741039
View directory record Official record
Conditions
Breast Cancer, Lung Cancer, Prostate Cancer
Interventions
inactivated influenza vaccine and the 23- valent pneumococcal vaccine, inactivated influenza vaccine and the PPV23 vaccine (Pneumovax)
Biological
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
65 Years and older
Enrollment
126 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 20, 2015 · Synced Oct 6, 2026, 10:09 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

The INFLUENTIAL Trial- Evaluation of National Inpatient Influenza Vaccination Program

NCT05832307
View directory record Official record
Conditions
Influenza
Interventions
Existing Influenza Vaccination Practices, Standardized inpatient influenza vaccination program
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
6 Months to 99 Years
Enrollment
22,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
2
States / cities
Chicago, Illinois • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Oct 6, 2026, 10:09 AM EDT
Withdrawn Phase 2 Interventional Accepts healthy volunteers

Safety and Immunogenicity of Vaccine in Adults at Occupational Risk for Influenza A (H5N1) Exposure

NCT01045564
View directory record Official record
Conditions
Influenza
Interventions
GSK influenza virus H5N1 vaccine 1557484A
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
3
States / cities
Atlanta, Georgia • Bethesda, Maryland • Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 23, 2015 · Synced Oct 6, 2026, 10:09 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 11, 2015 · Synced Oct 6, 2026, 10:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Bioequivalence of Over-encapsulated Oseltamivir Capsules to Marketed Oseltamivir Capsules in Healthy Volunteers

NCT01258530
View directory record Official record
Conditions
Influenza, Human
Interventions
over-encapsulated oseltamivir, oseltamivir
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jun 7, 2017 · Synced Oct 6, 2026, 10:09 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Simultaneous mRNA COVID-19 and IIV Vaccination in Pregnancy Study

NCT06503900
View directory record Official record
Conditions
Birth Outcomes, Safety, Adverse Event Following Immunization
Interventions
mRNA COVID-19 vaccine, IIV4 (quadrivalent inactivated influenza vaccine)
Biological
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Female only
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
6
States / cities
Atlanta, Georgia • Boston, Massachusetts • Durham, North Carolina + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Oct 6, 2026, 10:09 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

BRCA1/2 Flu Vaccine

NCT04499534
View directory record Official record
Conditions
BRCA1 Mutation, BRCA2 Mutation
Interventions
Seasonal influenza vaccine
Biological
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
25 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 8, 2026 · Synced Oct 6, 2026, 10:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Genetic and Environmental Factors in the Response to Influenza Vaccination

NCT03088904
View directory record Official record
Conditions
Influenza, Healthy
Interventions
FluMist® Quadrivalent, Fluzone® Quadrivalent vaccine
Biological
Lead sponsor
Stanford University
Other
Eligibility
12 Years to 49 Years
Enrollment
109 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 13, 2020 · Synced Oct 6, 2026, 10:09 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Duration of Immune Response to Influenza Vaccination in Patients With RA

NCT02311855
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Influenza vaccine
Biological
Lead sponsor
Bassett Healthcare
Other
Eligibility
40 Years to 75 Years
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Cooperstown, New York
Source: ClinicalTrials.gov public record
Updated Jan 6, 2017 · Synced Oct 6, 2026, 10:09 AM EDT