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ClinicalTrials.gov public records Last synced Jun 10, 2026, 8:49 AM EDT

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Showing 1–24 of 1,099 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Influenza Vaccines Clear all
Completed Not applicable Interventional Results available

Patient Portal Reminder/Recall for Influenza Vaccination in a Health System- RCT 2

NCT04110314
View directory record Official record
Conditions
Influenza, Respiratory Tract Infections
Interventions
Portal Reminders for Influenza Vaccination: Gain-framed, Portal Reminders for Influenza Vaccination: Loss-framed, Pre-commitment prompt
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
4 Months and older
Enrollment
430,636 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 4, 2022 · Synced Jun 10, 2026, 8:49 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 11, 2017 · Synced Jun 10, 2026, 8:49 AM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers

H1ssF Flu Vaccine Clinical Trial

NCT07340047
View directory record Official record
Conditions
Influenza
Interventions
H1ssF vaccine, Flucelvax seasonal vaccine
Biological
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 70 Years
Enrollment
112 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Jun 10, 2026, 8:49 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Phase 2 Study to Evaluate Immune Responses of FluMist®

NCT00461981
View directory record Official record
Conditions
Influenza Vaccine
Interventions
TIV, Trivalent Inactivated Influenza Virus Vaccine, FluMist, Influenza Virus Vaccine Live
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
12 Months to 35 Months
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
19
States / cities
Jonesboro, Arkansas • Little Rock, Arkansas • Anaheim, California + 16 more
Source: ClinicalTrials.gov public record
Updated Oct 5, 2021 · Synced Jun 10, 2026, 8:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety and Immune Response Study of GSK Biologicals' Influenza Virus Vaccine 1388442A Compared With Fluarix

NCT00693706
View directory record Official record
Conditions
Influenza
Interventions
Trivalent influenza vaccine GSK 138842A, Fluarix
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 49 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
2
States / cities
Miami, Florida • Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Jun 7, 2018 · Synced Jun 10, 2026, 8:49 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Safety and Immunogenicity of Quadrivalent Influenza mRNA Vaccine MRT5410 in Adult Participants 18 Years of Age and Older

NCT05624606
View directory record Official record
Conditions
Influenza Immunization
Interventions
Quadrivalent Influenza mRNA Vaccine MRT5410, Quadrivalent Recombinant Influenza vaccine RIV4, Quadrivalent Inactivated Influenza Standard Dose QIV-SD, Quadrivalent Inactivated Influenza High Dose QIV-HD
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
682 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
23
States / cities
Huntington Park, California • Long Beach, California • North Hollywood, California + 19 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2025 · Synced Jun 10, 2026, 8:49 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Tolerability Study of GlaxoSmithKline (GSK)1557484A Vaccine in Adults at Occupational Risk for Influenza A (H5N1) Exposure

NCT01788228
View directory record Official record
Conditions
Influenza, Influenza Vaccines
Interventions
Influenza A (H5N1) Virus Monovalent Vaccine, Adjuvanted (A/Indonesia)
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
3
States / cities
Stockbridge, Georgia • Rockville, Maryland • Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 22, 2020 · Synced Jun 10, 2026, 8:49 AM 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 14, 2023 · Synced Jun 10, 2026, 8:49 AM EDT
Withdrawn No phase listed Observational

Pharmacokinetic Assessment of Peramivir in Hospitalized Adults Undergoing Continuous Renal Replacement Therapy

NCT01146353
View directory record Official record
Conditions
Influenza, Renal Failure
Interventions
Not listed
Lead sponsor
Midwestern University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 19, 2018 · Synced Jun 10, 2026, 8:49 AM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

A Deep Longitudinal Analysis of Next Generation Influenza Vaccines in Older Adults

NCT05518500
View directory record Official record
Conditions
Aging, Influenza Vaccine, Dendritic Cell, Vaccine Response
Interventions
Flu Vaccine (Year 1), Flu Vaccine (Year 2), Flu Vaccine (Year 3), Flu Vaccine (Year 4)
Biological
Lead sponsor
The Jackson Laboratory
Other
Eligibility
65 Years and older
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Jun 10, 2026, 8:49 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Comparative Study of Influenza Vaccines in Adults, FLUVACS-year 4

NCT00538512
View directory record Official record
Conditions
Influenza
Interventions
Fluzone, Flumist, Physiologic saline
Biological · Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 49 Years
Enrollment
1,952 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
4
States / cities
Ann Arbor, Michigan • Kalamazoo, Michigan • Mount Pleasant, Michigan + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 5, 2017 · Synced Jun 10, 2026, 8:49 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Study of Inactivated, Split-Virion Influenza Vaccine Compared With Standard Fluzone Vaccine in Elderly Subjects

NCT00388583
View directory record Official record
Conditions
Orthomyxoviridae Infection, Influenza, Myxovirus Infection
Interventions
Split, Inactivated, Trivalent Influenza Vaccine
Biological
Lead sponsor
Sanofi
Industry
Eligibility
65 Years and older
Enrollment
817 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
17
States / cities
Alabaster, Alabama • Tucson, Arizona • Fountain Valley, California + 14 more
Source: ClinicalTrials.gov public record
Updated Apr 17, 2012 · Synced Jun 10, 2026, 8:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Influenza Challenge Study to Determine the Optimal Infection Dose and Safety of a Recombinant H3N2 (A/Texas/71/2017 (H3N2, Clade 3C3a) Influenza Strain

NCT04978454
View directory record Official record
Conditions
Influenza
Interventions
Influenza RG-A/Texas/71/2017 (H3N2) Challenge, Placebo
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
2
States / cities
Baltimore, Maryland • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 27, 2025 · Synced Jun 10, 2026, 8:49 AM EDT
Not listed Phase 1 Interventional

Regenerative Medicine for COVID-19 and Flu-Elicited ARDS Using Lomecel-B (RECOVER)

NCT04629105
View directory record Official record
Conditions
ARDS, Human, Covid19
Interventions
Longeveron Mesenchymal Stem Cells (LMSCs), Placebo
Biological · Other
Lead sponsor
Longeveron Inc.
Industry
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
3
States / cities
Miami, Florida • Baltimore, Maryland • Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 19, 2024 · Synced Jun 10, 2026, 8:49 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Galactooligosaccharide, Immune Strength, and Digestive Health in Older Adults Over Cold and Flu Season

NCT01302561
View directory record Official record
Conditions
Healthy
Interventions
Sucrose, Galactooligosaccharide
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
60 Years and older
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 1, 2012 · Synced Jun 10, 2026, 8:49 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Immunogenicity of a Quadrivalent Virus-Like Particles (VLP) Influenza Vaccine in Healthy Adults

NCT02768805
View directory record Official record
Conditions
Virus Diseases, RNA Virus Infections, Respiratory Tract Diseases, Respiratory Tract Infections
Interventions
15 µg/strain of Quadrivalent VLP Vaccine, 30 µg/strain of Quadrivalent VLP Vaccine, 15 µg/strain of the licensed quadrivalent vaccine
Biological
Lead sponsor
Medicago
Industry
Eligibility
18 Years to 64 Years
Enrollment
900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
3
States / cities
Hollywood, Florida • South Miami, Florida • Endwell, New York
Source: ClinicalTrials.gov public record
Updated Jun 10, 2020 · Synced Jun 10, 2026, 8:49 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Novartis H1N1 Vaccine in Pregnant Women

NCT00992719
View directory record Official record
Conditions
Influenza
Interventions
Inactivated H1N1 Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 39 Years · Female only
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
6
States / cities
Baltimore, Maryland • St Louis, Missouri • Durham, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 6, 2013 · Synced Jun 10, 2026, 8:49 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Immunogenicity & Safety of GSK's Influenza Vaccine 1557484A Given to Adults Aged ≥18 Years

NCT00616928
View directory record Official record
Conditions
Influenza
Interventions
Influenza A (H5N1) Virus Monovalent Vaccine, Adjuvanted, Placebo
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
4,561 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
30
States / cities
Huntsville, Alabama • Phoenix, Arizona • Anaheim, California + 27 more
Source: ClinicalTrials.gov public record
Updated Jun 7, 2018 · Synced Jun 10, 2026, 8:49 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 22, 2015 · Synced Jun 10, 2026, 8:49 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A/H5N1 Dose Ranging Study With Adjuvant Patch

NCT00532792
View directory record Official record
Conditions
Pandemic Influenza
Interventions
A/H5N1, Placebo
Biological
Lead sponsor
Intercell USA, Inc.
Industry
Eligibility
18 Years to 49 Years
Enrollment
501 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
5
States / cities
Vallejo, California • Miami, Florida • Kansas City, Kansas + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 13, 2012 · Synced Jun 10, 2026, 8:49 AM EDT
Completed Phase 2 Interventional Results available

Comparing the Efficacy, Safety, and Tolerability of Combination Antivirals (Amantadine, Ribavirin, Oseltamivir) Versus Oseltamivir for the Treatment of Influenza in Adults at Risk for Complications

NCT01227967
View directory record Official record
Conditions
Influenza
Interventions
Amantadine, Ribavirin, Oseltamivir, Oseltamivir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
881 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
69
States / cities
Birmingham, Alabama • Chandler, Arizona • Glendale, Arizona + 58 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Jun 10, 2026, 8:49 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 21, 2023 · Synced Jun 10, 2026, 8:49 AM EDT
Completed Phase 2 Interventional Results available

Statin Therapy in Acute Influenza

NCT02056340
View directory record Official record
Conditions
Influenza
Interventions
Atorvastatin, Placebo
Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
116 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 25, 2019 · Synced Jun 10, 2026, 8:49 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

A Trial to Evaluate the Effect of CD388 on the Immunogenicity of Fluzone® HD Vaccine

NCT07300085
View directory record Official record
Conditions
Healthy Participants
Interventions
Fluzone HD influenza vaccine, CD388 Injection, Placebo
Biological · Combination Product
Lead sponsor
Cidara Therapeutics Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Industry
Eligibility
18 Years to 49 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
2
States / cities
Glendale, California • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Jun 10, 2026, 8:49 AM EDT