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ClinicalTrials.gov public records Last synced Sep 30, 2026, 3:45 AM EDT

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Showing 25–48 of 73 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Influenza (Pandemic) Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Learn How Safe, Tolerable and Capable of Producing an Immune Response is, a Modified RNA Vaccine Against Pandemic Influenza

NCT06179446
View directory record Official record
Conditions
Grippe, Influenza, Vaccines
Interventions
pdmFlu vaccine, Placebo, Licensed influenza vaccine
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 84 Years
Enrollment
157 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
3
States / cities
New Haven, Connecticut • Hollywood, Florida • New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 23, 2026 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Bird Flu Virus Vaccine (H5N1) in Healthy Adults

NCT00347672
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H5N1 (6-2) AA ca Recombinant (A/VietNam/1203/2004 x A/AnnArbor/6/60/ca)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 21, 2008 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Study to Find and Confirm the Dose and Assess Safety, Reactogenicity and Immune Response of a Vaccine Against Pandemic H5N1 Influenza Virus in Healthy Younger and Older Adults

NCT06382311
View directory record Official record
Conditions
Influenza, Human
Interventions
Flu Pandemic mRNA_Dose level 1, Flu Pandemic mRNA_Dose level 2, Flu Pandemic mRNA_ Dose level 3., Flu Pandemic mRNA_ Dose level 4, Flu Pandemic mRNA_Dose level 5, Flu Pandemic mRNA_Dose level 6, Influenza virus vaccine, Placebo
Biological · Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 85 Years
Enrollment
991 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
21
States / cities
Anniston, Alabama • Little Rock, Arkansas • Fort Collins, Colorado + 18 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Evaluate Safety and Immunogenicity of One or Two Booster Vaccinations With H5N6 Influenza Vaccine in Adults Primed With H5N1 Influenza Vaccine or Unprimed

NCT05422326
View directory record Official record
Conditions
Influenza, Human, Influenza in Birds, Respiratory Tract Infections, Infections, Orthomyxoviridae Infections, RNA Virus Infections, Virus Diseases, Respiratory Tract Diseases
Interventions
aH5N6c on Day 1, aH5N6c on Day 22, Placebo on Day 22
Biological
Lead sponsor
Seqirus
Industry
Eligibility
18 Years and older
Enrollment
260 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
18
States / cities
Huntsville, Alabama • Tempe, Arizona • San Diego, California + 14 more
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Bird Flu Virus Vaccine (H9N2) in Healthy Adults (Study B)

NCT00380237
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H9N2 (6-2) AA ca Reassortant (A/Chicken/Hong Kong/G9/97 x A/Ann Arbor/6/60 ca)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 21, 2008 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pandemic Influenza Plasmid DNA Vaccines (Needle-Free)

NCT00694213
View directory record Official record
Conditions
Influenza
Interventions
VCL-IPM1, VCL-IPT1, PBS
Biological
Lead sponsor
Vical
Industry
Eligibility
18 Years to 45 Years
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
3
States / cities
San Diego, California • Baltimore, Maryland • Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated Feb 27, 2019 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

H5-VLP + GLA-AF Vaccine Trial in Healthy Adult Volunteers

NCT01657929
View directory record Official record
Conditions
Influenza A Subtype H5N1 Infection
Interventions
H5-VLP + GLA-AF, H5-VLP alone, H5-VLP + Alhydrogel(R), Licensed H5N1 vaccine
Biological
Lead sponsor
Access to Advanced Health Institute (AAHI)
Other
Eligibility
18 Years to 49 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
3
States / cities
Daytona Beach, Florida • Dallas, Texas • Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 26, 2014 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety Study of an Oral Vaccine to Prevent Avian Influenza

NCT01335347
View directory record Official record
Conditions
Avian Influenza, Bird Flu
Interventions
ND1.1, Placebo control
Biological
Lead sponsor
Vaxart
Industry
Eligibility
18 Years to 49 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 3, 2013 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Two Doses of H5N1 Influenza Vaccine in Elderly Subjects

NCT01766921
View directory record Official record
Conditions
Pandemic H5N1 Influenza
Interventions
Adjuvanted H5N1 pandemic influenza vaccine
Biological
Lead sponsor
Novartis Vaccines
Industry
Eligibility
65 Years and older
Enrollment
1,393 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
12
States / cities
Phoenix, Arizona • Hollywood, Florida • Wichita, Kansas + 7 more
Source: ClinicalTrials.gov public record
Updated Jan 30, 2019 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate Safety, Immunogenicity, and Lot-to-Lot Consistency of H5N1 Subunit Influenza Virus Vaccine in Healthy Adult Subjects ≥18 Years of Age

NCT02839330
View directory record Official record
Conditions
Avian Influenza
Interventions
aH5N1c, Placebo
Biological
Lead sponsor
Seqirus
Industry
Eligibility
18 Years and older
Enrollment
3,196 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
26
States / cities
Huntsville, Alabama • Chandler, Arizona • Tempe, Arizona + 20 more
Source: ClinicalTrials.gov public record
Updated Dec 6, 2024 · Synced Sep 30, 2026, 3:45 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

A Phase I/II Study on Safety AND Immunogenicity of AZD4117 and AZD5315 Vaccines (PANDA)

NCT07128615
View directory record Official record
Conditions
Influenza A
Interventions
AZD4117, AZD5315, Placebo
Biological · Other
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
405 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
14
States / cities
Long Beach, California • Rolling Hills Estates, California • Hialeah, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Project to Investigate Ways to Reduce the Spread of Influenza in Schools and Households With Children

NCT00446628
View directory record Official record
Conditions
Influenza
Interventions
behaviors reducing spread of influenza
Behavioral
Lead sponsor
Kiren Mitruka
Federal
Eligibility
6 Months and older
Enrollment
3,360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 27, 2016 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immune Response to Recombinant Live-Attenuated Influenza H2N2 Virus Vaccine

NCT00722774
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H2N2 1960 AA ca recombinant vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 10, 2008 · Synced Sep 30, 2026, 3:45 AM EDT
Completed No phase listed Observational

Natural History of Systemic and Nasal Mucosal Immunity to Influenza and SARS-CoV-2 in Adults After Vaccination

NCT04794829
View directory record Official record
Conditions
Influenza, COVID-19
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 120 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 2 Interventional Results available

Safety Study to Assess IV Zanamivir for Treatment of Influenza Infection in Patients Who Are in Hospital

NCT01014988
View directory record Official record
Conditions
Influenza, Human
Interventions
zanamivir aqueous solution
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
6 Months and older
Enrollment
202 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
40
States / cities
Birmingham, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 33 more
Source: ClinicalTrials.gov public record
Updated Mar 28, 2017 · Synced Sep 30, 2026, 3:45 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Study to Evaluate the Safety and the Immunogenicity of a Second Generation Structurally Designed mRNA Vaccine Candidate Against Pandemic Influenza H5 HA Strain in Healthy Adult Participants Aged 18 Years and Older

NCT06907511
View directory record Official record
Conditions
Pandemic Influenza Immunization, Healthy Volunteers
Interventions
Pandemic flu H5 HA mRNA SD2 vaccine, Placebo
Biological · Other
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
720 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
13
States / cities
La Mesa, California • DeLand, Florida • Lakeland, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Jan 16, 2026 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pandemic Influenza Plasmid DNA Vaccines (Needle)

NCT00709800
View directory record Official record
Conditions
Influenza
Interventions
VCL-IPT1, VCL-IPM1, PBS
Biological
Lead sponsor
Vical
Industry
Eligibility
18 Years to 45 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2007
U.S. locations
3
States / cities
San Diego, California • Baltimore, Maryland • Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated Feb 12, 2009 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety and Immune Response of Candidate H1N1 Influenza Vaccine GSK2340274A Following Seasonal Influenza Vaccination in Adults

NCT01059617
View directory record Official record
Conditions
Influenza
Interventions
GSK Biologicals' FluLaval®, Placebo (saline), GSK Biologicals' investigational H1N1 Influenza Vaccine - GSK2340274A, GSK Biologicals' investigational H1N1 Influenza Vaccine - GSK2340273A
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
19 Years to 40 Years
Enrollment
133 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
3
States / cities
Milford, Massachusetts • Salisbury, North Carolina • Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 20, 2018 · Synced Sep 30, 2026, 3:45 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 Sep 30, 2026, 3:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immunogenicity Study of Adenovirus-vectored, Intranasal Pandemic Influenza Vaccine.

NCT00755703
View directory record Official record
Conditions
Influenza A Subtype H5N1 Infection
Interventions
Pandemic Influenza Vaccine, Placebo
Biological
Lead sponsor
Altimmune, Inc.
Industry
Eligibility
19 Years to 49 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated May 29, 2025 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Two Doses of H5N1 Influenza Vaccine in Healthy Adults

NCT01776541
View directory record Official record
Conditions
Pandemic H5N1 Influenza
Interventions
Adjuvanted H5N1 pandemic influenza vaccine
Biological
Lead sponsor
Novartis Vaccines
Industry
Eligibility
18 Years to 64 Years
Enrollment
979 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
4
States / cities
Miami, Florida • St Louis, Missouri • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Feb 3, 2015 · Synced Sep 30, 2026, 3:45 AM EDT
Completed Phase 1 Interventional

VRC 308: An Open-Label Phase I Study of the Safety and Immunogenicity of an Investigational H1 DNA Influenza Vaccine, VRC-FLUDNA057-00-VP, in Healthy Adults 18-70 Years Old

NCT00973895
View directory record Official record
Conditions
Influenza A Virus, H1N1 Subtype, Novel Swine-Origin
Interventions
VRC-FLUDNA057-00-VP
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
20 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 Sep 30, 2026, 3:45 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Immunogenicity and Safety Study of GlaxoSmithKline (GSK) Biologicals' Monovalent Pandemic H5N1 Vaccine in Adults

NCT01416571
View directory record Official record
Conditions
Influenza
Interventions
Influenza A (H5N1) Virus Monovalent Vaccine, Adjuvanted
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 64 Years
Enrollment
78 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Mesa, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 21, 2018 · Synced Sep 30, 2026, 3:45 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 Sep 30, 2026, 3:45 AM EDT