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ClinicalTrials.gov public records Last synced Oct 11, 2026, 5:37 AM EDT

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Showing 169–192 of 1,155 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Influenza Vaccine Clear all
Recruiting Phase 3 Interventional

A Surveillance Study of Susceptibility to Baloxavir Marboxil in Pediatric Participants With Influenza and Transmission of Influenza to Household Contacts

NCT06094010
View directory record Official record
Conditions
Influenza
Interventions
Baloxavir Marboxil
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
3 Weeks to 11 Years
Enrollment
1,100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
28
States / cities
Birmingham, Alabama • Harrisburg, Arkansas • Miami, Florida + 23 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 11, 2026, 5:37 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Inactivated Influenza A/H5N1 Vaccine in the Elderly

NCT00230750
View directory record Official record
Conditions
Influenza
Interventions
Influenza A/H5N1 Vaccine, Placebo
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
65 Years and older
Enrollment
261 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
4
States / cities
Torrance, California • Rochester, New York • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 23, 2013 · Synced Oct 11, 2026, 5:37 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of VGX-3400X, H5N1 Avian Influenza Virus DNA Plasmid + Electroporation in Healthy Adults

NCT01142362
View directory record Official record
Conditions
Healthy
Interventions
VGX-3400X
Biological
Lead sponsor
Inovio Pharmaceuticals
Industry
Eligibility
18 Years to 50 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
2
States / cities
Overland Park, Kansas • Rockville, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 13, 2017 · Synced Oct 11, 2026, 5:37 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Immune Response of an H7N7 Vaccine in Healthy Adults

NCT01534468
View directory record Official record
Conditions
Influenza A Subtype H7N7 Infection
Interventions
Monovalent Influenza Subvirion Vaccine, H7N7
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 15, 2015 · Synced Oct 11, 2026, 5:37 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Zoonotic Influenza Infections of Swine Origin at Ohio Agricultural Fairs

NCT02124096
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
8 Years and older
Enrollment
336 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 19, 2019 · Synced Oct 11, 2026, 5:37 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Immunogenicity of Seasonal Influenza Vaccine and an Adenovirus Serotype 26- Based Vaccine Encoding for the Respiratory Syncytial Virus Pre-fusion F Protein (Ad26.RSV.preF), With and Without Co-administration, in Adults Aged 60 Years and Older in Stable Health

NCT03339713
View directory record Official record
Conditions
Healthy
Interventions
Ad26.RSV.preF, Fluarix, Placebo
Biological
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
60 Years and older
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Mt. Pleasant, South Carolina
Source: ClinicalTrials.gov public record
Updated Feb 4, 2025 · Synced Oct 11, 2026, 5:37 AM EDT
Completed Phase 2 Interventional Results available

Systems Analyses of the Immune Response to the Seasonal Influenza Vaccine

NCT04025580
View directory record Official record
Conditions
Healthy Volunteer
Interventions
Flucelvax, Fluvirin, Fluzone High Dose
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 2, 2024 · Synced Oct 11, 2026, 5:37 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 15, 2023 · Synced Oct 11, 2026, 5:37 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Home Testing of Respiratory Illness

NCT04245800
View directory record Official record
Conditions
Influenza -Like Illness, Influenza A, Influenza Type B, Respiratory Viral Infection, Respiratory Tract Infections
Interventions
Not listed
Lead sponsor
Evidation Health
Industry
Eligibility
18 Years and older
Enrollment
5,233 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
San Mateo, California
Source: ClinicalTrials.gov public record
Updated Jul 22, 2020 · Synced Oct 11, 2026, 5:37 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Study of Immune Responses to Influenza Vaccination

NCT03346772
View directory record Official record
Conditions
Influenza Vaccination
Interventions
Influenza vaccination
Biological
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 11, 2026, 5:37 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Acceptability of Fluzone Intradermal Vaccine to Patients and Vaccine Administrators

NCT01716130
View directory record Official record
Conditions
Patient Response to Fluzone ID Vaccine
Interventions
Not listed
Lead sponsor
Touro University, California
Other
Eligibility
18 Years to 64 Years
Enrollment
249 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Vallejo, California
Source: ClinicalTrials.gov public record
Updated Oct 29, 2012 · Synced Oct 11, 2026, 5:37 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Screening for LID Clinical Studies Unit Healthy Volunteer Protocols

NCT01386424
View directory record Official record
Conditions
Zika, Influenza
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 22, 2026 · Synced Oct 11, 2026, 5:37 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 Oct 11, 2026, 5:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cell-Mediated Immune Responses to Influenza A/H5N1 Vaccine

NCT00311727
View directory record Official record
Conditions
Influenza
Interventions
Influenza A/H5N1
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
339 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
3
States / cities
Baltimore, Maryland • Rochester, New York • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 16, 2013 · Synced Oct 11, 2026, 5:37 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety, Reactogenicity and Immunogenicity of Flublok Quadrivalent (Recombinant Influenza Vaccine,Seasonal Formulation)

NCT01959945
View directory record Official record
Conditions
Influenza
Interventions
Flublok® Quadrivalent Influenza Virus Vaccine, Fluarix Quadrivalent® Influenza Virus Vaccine
Biological
Lead sponsor
Protein Sciences Corporation
Industry
Eligibility
6 Years to 17 Years
Enrollment
219 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Auburn, Maine
Source: ClinicalTrials.gov public record
Updated Sep 23, 2016 · Synced Oct 11, 2026, 5:37 AM EDT
Completed Not applicable Interventional

Adult Influenza Vaccination Text Message Reminders With Electronic Health Record Alerts

NCT02284594
View directory record Official record
Conditions
Influenza
Interventions
text message
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
4,026 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 19, 2015 · Synced Oct 11, 2026, 5:37 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Study of the Immunogenicity and Safety of a Quadrivalent Influenza Vaccine (VAX2012Q) in Adults 18-64 Years

NCT02434276
View directory record Official record
Conditions
Influenza
Interventions
VAX2012Q, Fluzone Quadrivalent
Biological
Lead sponsor
VaxInnate Corporation
Industry
Eligibility
18 Years to 64 Years
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
6
States / cities
Huntsville, Alabama • San Diego, California • Melbourne, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 26, 2015 · Synced Oct 11, 2026, 5:37 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Immunogenicity Trial of Egg- Versus Non-Egg-Based Influenza Vaccines Among HCP

NCT03722589
View directory record Official record
Conditions
Influenza
Interventions
Flublok, Flucelvax, Fluarix, Fluzone, Fluzone High-Dose
Biological
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
18 Years to 65 Years
Enrollment
944 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
2
States / cities
Portland, Oregon • Temple, Texas
Source: ClinicalTrials.gov public record
Updated Jul 22, 2024 · Synced Oct 11, 2026, 5:37 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A/H5N1 Virus-Like Particle Antigen Dose Ranging Study With Adjuvant 2

NCT01596725
View directory record Official record
Conditions
Influenza (Pandemic)
Interventions
Monovalent Avian Influenza VLP (H5N1), Monovalent Avian Influenza VLP (H5N1); Adjuvant, Saline Placebo
Biological
Lead sponsor
Novavax
Industry
Eligibility
18 Years to 49 Years
Enrollment
333 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
5
States / cities
Anaheim, California • Miami, Florida • Pembroke Pines, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2014 · Synced Oct 11, 2026, 5:37 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

H5N1 Vaccine Intramuscular Versus Intradermal in Healthy Adults

NCT00310206
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 to 40 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 3, 2013 · Synced Oct 11, 2026, 5:37 AM EDT
Completed No phase listed Observational

Assessment of Alterations in Immune Function During Pregnancy and Post Parturition

NCT01200979
View directory record Official record
Conditions
Pregnancy Immune Function
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years · Female only
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 18, 2019 · Synced Oct 11, 2026, 5:37 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 Oct 11, 2026, 5:37 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Immunogenicity of Quadrivalent Live Attenuated Influenza Vaccine (LAIV) in Children

NCT01091246
View directory record Official record
Conditions
Healthy or Stable Chronic Illness
Interventions
Q/LAIV (MEDI3250), FluMist/B/Yamagata, FluMist/B/Victoria
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
2 Years to 17 Years
Enrollment
2,312 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
110
States / cities
Birmingham, Alabama • Mobile, Alabama • Tucson, Arizona + 95 more
Source: ClinicalTrials.gov public record
Updated Sep 26, 2011 · Synced Oct 11, 2026, 5:37 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Evaluation of the Safety and Immunogenicity of the Influenza Vaccine GSK2186877A in the Elderly

NCT00772889
View directory record Official record
Conditions
Influenza
Interventions
Influenza vaccine GSK2186877A, GSK Biologicals' Fluarix™
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
19 Years and older
Enrollment
971 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
9
States / cities
Clearwater, Florida • Coral Gables, Florida • Milford, Massachusetts + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2018 · Synced Oct 11, 2026, 5:37 AM EDT