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ClinicalTrials.gov public records Last synced Oct 13, 2026, 12:04 AM EDT

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Showing 121–144 of 163 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Seasonal Influenza vaccine Clear all
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Inactivated Split Virus Seasonal Influenza Vaccine (Vero Cell-Derived)

NCT01773928
View directory record Official record
Conditions
Influenza
Interventions
Vero cell-derived trivalent influenza vaccine manufactured with the modified manufacturing process (VCIV modified), VCIV manufactured with the current manufacturing process (VCIV current), Fluzone®, licensed trivalent influenza vaccine (TIV)
Biological
Lead sponsor
Alachua Government Services, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,928 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
20
States / cities
Chandler, Arizona • Anaheim, California • Paramount, California + 17 more
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Oct 13, 2026, 12:04 AM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers

A Clinical Study to Evaluate the Safety, Tolerability, and Immunogenicity of VAX-31 With Influenza Vaccine in Adults ≥ 50 Years of Age

NCT07365826
View directory record Official record
Conditions
Pneumococcal Vaccines
Interventions
31-valent pneumococcal conjugate vaccine, Seasonal Influenza Vaccine (SIV) (Flublok), Placebo
Biological
Lead sponsor
Vaxcyte, Inc.
Industry
Eligibility
50 Years and older
Enrollment
1,390 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
25
States / cities
Phoenix, Arizona • Fort Collins, Colorado • DeLand, Florida + 22 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Oct 13, 2026, 12:04 AM EDT
Terminated Phase 2 Interventional Results available

Lenalidomide as Immune Adjuvant in Patient's With Chronic Lymphocytic Leukemia (CLL)

NCT01924169
View directory record Official record
Conditions
Hematologic Disorder
Interventions
Lenalidomide, Influenza Vaccine, Pneumovax Vaccine
Drug · Biological
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 20, 2018 · Synced Oct 13, 2026, 12:04 AM EDT
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 13, 2026, 12:04 AM EDT
Completed Phase 2 Interventional Results available

A Study of MHAA4549A as Monotherapy for Acute Uncomplicated Seasonal Influenza A in Otherwise Healthy Adults

NCT02623322
View directory record Official record
Conditions
Influenza A
Interventions
MHAA4549A, Placebo
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
38
States / cities
Athens, Alabama • Costa Mesa, California • Fountain Valley, California + 32 more
Source: ClinicalTrials.gov public record
Updated Jan 8, 2019 · Synced Oct 13, 2026, 12:04 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Safety Study of Seasonal Influenza Vaccine by Jet Injection

NCT00987350
View directory record Official record
Conditions
Healthy Adults
Interventions
LectraJet, TIV by jet injection, Seasonal Trivalent Influenza Vaccine
Device · Biological
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 49 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
College Park, Maryland
Source: ClinicalTrials.gov public record
Updated May 3, 2021 · Synced Oct 13, 2026, 12:04 AM EDT
Completed Not applicable Interventional

The Effect of Time-Slot Scheduling on Flu Vaccination Rates

NCT01206686
View directory record Official record
Conditions
Seasonal Influenza
Interventions
Planning Prompt, Default Appointment, Control
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
50,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 17, 2016 · Synced Oct 13, 2026, 12:04 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Study of mRNA-1011.1, mRNA-1011.2, and mRNA-1012.1 Candidate Seasonal Influenza Vaccines in Healthy Adults

NCT05827068
View directory record Official record
Conditions
Seasonal Influenza
Interventions
mRNA-1011.1, mRNA-1011.2, mRNA-1012.1, mRNA-1010, mRNA-1010.2, mRNA-1010.3
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
50 Years to 75 Years
Enrollment
698 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
22
States / cities
Lakewood, California • Long Beach, California • Fort Collins, Colorado + 19 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2025 · Synced Oct 13, 2026, 12:04 AM EDT
Suspended Phase 3 Interventional

Comparison of Fluid Rapid Influenza and BinaxNOW Influenza A & B

NCT00828100
View directory record Official record
Conditions
Influenza
Interventions
fluID Rapid Influenza Test, BinaxNOW® Influenza A & B
Device
Lead sponsor
Nanogen, Inc.
Industry
Eligibility
Not listed
Enrollment
650 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2009
U.S. locations
2
States / cities
Shreveport, Louisiana • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 6, 2009 · Synced Oct 13, 2026, 12:04 AM EDT
Completed Phase 4 Interventional Results available

A Study of Oseltamivir (Tamiflu) for the Seasonal Prophylaxis of Influenza in Immunocompromised Participants

NCT00412737
View directory record Official record
Conditions
Influenza
Interventions
Oseltamivir, Placebo
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
1 Year and older
Enrollment
477 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
34
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Stanford, California + 28 more
Source: ClinicalTrials.gov public record
Updated Jun 10, 2016 · Synced Oct 13, 2026, 12:04 AM 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 13, 2026, 12:04 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Study of mRNA-based Influenza and SARS-CoV-2 (COVID-19) Multi-component Vaccines in Healthy Adults

NCT05827926
View directory record Official record
Conditions
SARS-CoV-2, Influenza
Interventions
Influenza Vaccine 1, mRNA-1083.1, mRNA-1083.2, mRNA-1083.3, Investigational Influenza Vaccine 1, Investigational COVID-19 Vaccine 1, COVID-19 Vaccine 1, Investigational Influenza Vaccine 2, Influenza Vaccine 2, mRNA-1083, Investigational COVID-19 Vaccine 2, COVID-19 Vaccine 2
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
18 Years to 79 Years
Enrollment
1,758 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
69
States / cities
Chandler, Arizona • Colton, California • Huntington Beach, California + 59 more
Source: ClinicalTrials.gov public record
Updated Dec 23, 2025 · Synced Oct 13, 2026, 12:04 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Immunogenicity of Seasonal Influenza by Delivery Directly to Ileum

NCT01761123
View directory record Official record
Conditions
Seasonal Influenza
Interventions
VXA-A1.1
Biological
Lead sponsor
Vaxart
Industry
Eligibility
18 Years to 49 Years · Male only
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Dec 10, 2014 · Synced Oct 13, 2026, 12:04 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of Immune Responses in Healthy Adults Receiving Live Influenza Virus Vaccines

NCT01674205
View directory record Official record
Conditions
Influenza, Human
Interventions
A/swine/Missouri/4296424/2006 (H2N3) x A/Ann Arbor/6/60 ca (H2N3 MO 2006/AA ca), A/chicken/Hong Kong/G9/97 (H9N2) x A/Ann Arbor/6/60 ca (H9N2 G9/AA ca), 2012-2013 trivalent seasonal live attenuated influenza vaccine (FluMist®), Vaccine placebo (Leibovitz-15 [L-15]), Vaccine placebo (FluMist®)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 42 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 15, 2015 · Synced Oct 13, 2026, 12:04 AM EDT
Completed Phase 4 Interventional

A Study of Tamiflu (Oseltamivir) for Seasonal Prophylaxis of Influenza in Children.

NCT00412555
View directory record Official record
Conditions
Influenza
Interventions
oseltamivir [Tamiflu]
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
1 Year to 12 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
4
States / cities
West Palm Beach, Florida • Pittsburgh, Pennsylvania • Jackson, Tennessee + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2020 · Synced Oct 13, 2026, 12:04 AM EDT
Recruiting Phase 1 Interventional

A Study on the Safety and Immune Response of Investigational mRNA Seasonal Flu/COVID-19 Combination Vaccine in Adults

NCT07464314
View directory record Official record
Conditions
Influenza, Human+COVID-19
Interventions
Investigational mRNA Seasonal Flu/COVID-19 Combination (Flu/COVm) Vaccine, Licensed Seasonal Influenza Vaccine, Licensed COVID-19 Vaccine
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
65 Years to 85 Years
Enrollment
225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
12
States / cities
Anniston, Alabama • Little Rock, Arkansas • Fair Oaks, California + 9 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Oct 13, 2026, 12:04 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Phase 2 Influenza A Challenge Study Following Oral Administration of an H1N1 HA Ad-Vector Seasonal Flu Vaccine

NCT02918006
View directory record Official record
Conditions
Influenza
Interventions
VXA-A1.1, Fluzone®, Placebo Tablets, Saline Solution for Placebo IM Injection
Biological · Other
Lead sponsor
Vaxart
Industry
Eligibility
18 Years to 49 Years
Enrollment
179 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Costa Mesa, California
Source: ClinicalTrials.gov public record
Updated Oct 6, 2022 · Synced Oct 13, 2026, 12:04 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

T-cell And General Immune Response to Seasonal Influenza Vaccine (SLVP018) - Year 1, 2009

NCT01987349
View directory record Official record
Conditions
Influenza
Interventions
Fluzone® (intramuscular), FluMist® (intranasal)
Biological
Lead sponsor
Stanford University
Other
Eligibility
8 Years to 100 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated May 12, 2017 · Synced Oct 13, 2026, 12:04 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

A Study to Evaluate the Safety, Reactogenicity, and Immunogenicity of mRNA-1010 in Healthy Adults

NCT05606965
View directory record Official record
Conditions
Influenza
Interventions
mRNA-1010, Egg-based Quadrivalent Influenza Vaccine, Adjuvanted Quadrivalent Influenza Vaccine, Inactivated Influenza Vaccine, mRNA-1345, mRNA-1045
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
172 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Nov 24, 2025 · Synced Oct 13, 2026, 12:04 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Concomitant Administration of 13-valent Pneumococcal Conjugate Vaccine (13vPnC) With Influenza Vaccine in 23-valent Pneumococcal Polysaccharide (23vPS) Pre-vaccinated Adults.

NCT02124161
View directory record Official record
Conditions
PREVENTION OF INVASIVE PNEUMOCOCCAL DISEASE
Interventions
13-valent pneumococcal conjugate vaccine, Seasonal Inactivated Influenza Vaccine, Placebo
Biological · Other
Lead sponsor
Pfizer
Industry
Eligibility
50 Years and older
Enrollment
882 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
44
States / cities
Birmingham, Alabama • Huntsville, Alabama • Scottsdale, Arizona + 37 more
Source: ClinicalTrials.gov public record
Updated Jul 1, 2016 · Synced Oct 13, 2026, 12:04 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Sanofi Pasteur, TIV + H1N1, Pediatric Population

NCT00943202
View directory record Official record
Conditions
Influenza
Interventions
Inactivated H1N1 Vaccine, Trivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Months to 17 Years
Enrollment
531 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
8
States / cities
Atlanta, Georgia • Iowa City, Iowa • St Louis, Missouri + 4 more
Source: ClinicalTrials.gov public record
Updated Apr 22, 2013 · Synced Oct 13, 2026, 12:04 AM EDT
Suspended Phase 3 Interventional

Prospective Evaluation of the Fluid Rapid Influenza Test

NCT00826709
View directory record Official record
Conditions
Influenza
Interventions
fluID Rapid Influenza Test
Device
Lead sponsor
Nanogen, Inc.
Industry
Eligibility
Not listed
Enrollment
1,300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2009
U.S. locations
12
States / cities
San Diego, California • DeLand, Florida • Shreveport, Louisiana + 8 more
Source: ClinicalTrials.gov public record
Updated Apr 15, 2009 · Synced Oct 13, 2026, 12:04 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Adaptive Immune Responses and Repertoire in Influenza Vaccination and Infection (SLVP031)

NCT03028987
View directory record Official record
Conditions
Influenza
Interventions
Fluzone®, FluMist®
Biological
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 49 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Sep 12, 2017 · Synced Oct 13, 2026, 12:04 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Adjuvanted Seasonal Recombinant Quadrivalent Virus-Like Particles (QVLP) Influenza Vaccine in Adults 65 Years of Age and Older

NCT04622592
View directory record Official record
Conditions
Influenza
Interventions
Instramuscular vaccine
Biological
Lead sponsor
Medicago
Industry
Eligibility
65 Years and older
Enrollment
209 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
14
States / cities
Huntsville, Alabama • Chandler, Arizona • San Diego, California + 11 more
Source: ClinicalTrials.gov public record
Updated Jul 21, 2023 · Synced Oct 13, 2026, 12:04 AM EDT