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ClinicalTrials.gov public records Last synced Oct 14, 2026, 4:58 PM EDT

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Showing 385–408 of 1,124 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Influenza Virus Vaccine Clear all
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 14, 2026, 4:58 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

pH1N1 Blinded Challenge Study

NCT07110532
View directory record Official record
Conditions
Influenza
Interventions
A/Arkansas/08/2020 (pH1N1), Sham/Diluent (1X SPG+Arg+Gel)
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 55 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
2
States / cities
Baltimore, Maryland • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 9, 2026 · Synced Oct 14, 2026, 4:58 PM EDT
Completed No phase listed Observational

Clinical Performance Study of the Ultra Influenza A&B Test Using Nasal Swabs for Identifying Subjects Who Are Infected With the Influenza Virus Strain Type A or Type B

NCT01753531
View directory record Official record
Conditions
Influenza, Human
Interventions
Flu Symptoms
Device
Lead sponsor
Sekisui Diagnostics, LLC
Industry
Eligibility
3 Months and older
Enrollment
677 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
3
States / cities
Winston-Salem, North Carolina • Charleston, South Carolina • New Braunfels, Texas
Source: ClinicalTrials.gov public record
Updated Jun 24, 2013 · Synced Oct 14, 2026, 4:58 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Comparison of Flu Vaccine Doses in Children

NCT01164553
View directory record Official record
Conditions
Influenza
Interventions
Trivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Months to 35 Months
Enrollment
243 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
7
States / cities
Atlanta, Georgia • Iowa City, Iowa • Baltimore, Maryland + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 29, 2013 · Synced Oct 14, 2026, 4:58 PM EDT
Completed No phase listed Observational

Influenza Vaccine in HIV Infection: Immune Response and Effect on Viral Load

NCT00025922
View directory record Official record
Conditions
HIV Infection
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 14, 2026, 4:58 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Digital Storytelling to Reduce Pediatric Influenza Vaccination Disparities

NCT06274359
View directory record Official record
Conditions
Influenza
Interventions
Digital storytelling
Behavioral
Lead sponsor
Denver Health and Hospital Authority
Other
Eligibility
18 Years to 90 Years
Enrollment
398 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
2
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 28, 2026 · Synced Oct 14, 2026, 4:58 PM 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 22, 2023 · Synced Oct 14, 2026, 4:58 PM EDT
Completed No phase listed Observational

Prospective Clinical Evaluation of COVID/Flu Detect™ Rapid Self-Test in Symptomatic Subjects for Non-Prescription Over-the-Counter (OTC) Use

NCT06734741
View directory record Official record
Conditions
COVID-19, Influenza A, Influenza B
Interventions
COVID/Flu Detect™ Rapid Self-Test
Diagnostic Test
Lead sponsor
InBios International, Inc.
Industry
Eligibility
2 Years and older
Enrollment
899 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
10
States / cities
Birmingham, Alabama • Miami, Florida • Boise, Idaho + 5 more
Source: ClinicalTrials.gov public record
Updated May 22, 2025 · Synced Oct 14, 2026, 4:58 PM EDT
Active, not recruiting Not applicable Interventional

Community Care Intervention to Decrease COVID-19 Vaccination Inequities

NCT06156254
View directory record Official record
Conditions
COVID-19 Vaccination
Interventions
Community Health Worker Intervention to Enhance Vaccination Behavior (CHW-VB)
Behavioral
Lead sponsor
RAND
Other
Eligibility
18 Years and older
Enrollment
800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
4
States / cities
Brooklyn, New York • New York, New York • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Oct 14, 2026, 4:58 PM EDT
Active, not recruiting Not applicable Interventional

Comparison of Nasopharyngeal Swab v. Nasopharyngeal Saline Wash or Saliva Collection in Testing for Respiratory Viruses

NCT05864118
View directory record Official record
Conditions
Respiratory Tract Infections
Interventions
Respiratory pathogen panel PCR test, COVID-19 antibody test
Diagnostic Test
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Apr 17, 2026 · Synced Oct 14, 2026, 4:58 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Clinical Study of the Immunogenicity of GSK Biologicals' Influenza Vaccine GSK2186877A in People Aged 65 Years or Older

NCT00765076
View directory record Official record
Conditions
Influenza
Interventions
GSK Biologicals' influenza vaccine GSK2186877A, GSK Biologicals' Fluarix
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
192 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 31, 2018 · Synced Oct 14, 2026, 4:58 PM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Effect of Age and Prior Immunity on Response to H1N1 Vaccines in Children

NCT01097941
View directory record Official record
Conditions
2009 H1N1 Influenza
Interventions
Live Attenuated H1N1 Influenza Vaccine, Influenza A (H1N1) 2009 Monovalent Vaccine, Influenza A (H1N1) 2009 Monovalent Vaccine/ Influenza A (H1N1) Monovalent Vaccine Live
Biological
Lead sponsor
University of Rochester
Other
Eligibility
4 Years to 9 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Sep 24, 2015 · Synced Oct 14, 2026, 4:58 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Non-invasive Biometric Monitoring in Nursing Homes to Fight COVID-19

NCT04548895
View directory record Official record
Conditions
Covid19, Community-Acquired Respiratory Tract Infection
Interventions
Observational measurement of biometric data. No change to health care provided.
Device
Lead sponsor
Health Stream Analytics, LLC
Industry
Eligibility
Not listed
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Pasco, Washington
Source: ClinicalTrials.gov public record
Updated Jun 11, 2021 · Synced Oct 14, 2026, 4:58 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study of High-Dose Trivalent Inactivated Influenza Vaccine in Adults 50 to 64 Years of Age

NCT01258595
View directory record Official record
Conditions
Influenza
Interventions
High-Dose Trivalent Inactivated Influenza Vaccine, Trivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
50 Years to 64 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
5
States / cities
Idaho Falls, Idaho • Columbia, Maryland • Ellicott City, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated May 16, 2016 · Synced Oct 14, 2026, 4:58 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Investigate the Safety and Immunogenicity of the Quadrivalent Influenza mRNA Vaccines in Adults Aged 18 Years and Above

NCT06361875
View directory record Official record
Conditions
Influenza Immunization, Healthy Volunteers
Interventions
Quadrivalent Influenza mRNA Vaccine MRT5421, Quadrivalent Influenza mRNA Vaccine MRT5424, Quadrivalent Influenza mRNA Vaccine MRT5429, Quadrivalent Influenza Standard Dose Vaccine, Quadrivalent Influenza High-Dose Vaccine, Quadrivalent Recombinant Influenza Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
908 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
11
States / cities
San Diego, California • Hialeah, Florida • Hollywood, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Aug 4, 2026 · Synced Oct 14, 2026, 4:58 PM 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 14, 2026, 4:58 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study Evaluating 13 Valent Pneumococcal Conjugate Vaccine With Trivalent Inactivated Influenza Vaccine

NCT00521586
View directory record Official record
Conditions
Influenza
Interventions
13 valent pneumococcal conjugate vaccine
Biological
Lead sponsor
Pfizer
Industry
Eligibility
50 Years to 59 Years
Enrollment
1,116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2013
U.S. locations
41
States / cities
Chandler, Arizona • Rolling Hills Estates, California • Aurora, Colorado + 29 more
Source: ClinicalTrials.gov public record
Updated Apr 9, 2015 · Synced Oct 14, 2026, 4:58 PM EDT
Completed Phase 1 Interventional

An Open-Label, Randomized Phase I Study in Healthy Adults of the Safety and Immunogenicity of Prime-Boost Intervals With Monovalent Influenza Subunit Virion (H5N1) Vaccine, A/Indonesia/05/2005 (Sanofi Pasteur, Inc.) Administered Alone or Following Re...

NCT01086657
View directory record Official record
Conditions
Influenza A Virus, H5N1 Subtype
Interventions
VRC-AVIDNA036-00-VP, Monovalent Influenza Subunit Virion (Inactive H5N1) Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 60 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 14, 2026, 4:58 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Study to Eliminate Hib Carriage in Rural Alaska Native Villages

NCT00153556
View directory record Official record
Conditions
Haemophilus Influenzae Type B, Carrier State
Interventions
Hib conjugate vaccine (HbOC, Wyeth Vaccines)
Biological
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
0 Years and older
Enrollment
3,200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2003
U.S. locations
1
States / cities
Anchorage, Alaska
Source: ClinicalTrials.gov public record
Updated Sep 12, 2005 · Synced Oct 14, 2026, 4:58 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Influenza Challenge in Mood Disorders

NCT02415166
View directory record Official record
Conditions
MAJOR DEPRESSIVE DISORDER
Interventions
INFLUENZA VACCINE, NaCl-saline placebo
Biological · Other
Lead sponsor
Laureate Institute for Brain Research, Inc.
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Tulsa, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jan 23, 2018 · Synced Oct 14, 2026, 4:58 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Biomarkers of Trained Immunity Following MMR Vaccination

NCT04646239
View directory record Official record
Conditions
Covid19
Interventions
Heterologous stimuli, Neutralization assay
Diagnostic Test
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Nov 26, 2021 · Synced Oct 14, 2026, 4:58 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study to Assess the Immunogenicity and Safety of an Investigational Influenza Vaccine in Children

NCT00980005
View directory record Official record
Conditions
Influenza
Interventions
GSK investigational vaccine GSK1557482A, Fluzone®
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
3 Years to 17 Years
Enrollment
2,116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
28
States / cities
Birmingham, Alabama • Benton, Arkansas • Huntington Beach, California + 25 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2018 · Synced Oct 14, 2026, 4:58 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety, Tolerability and Immunogenicity of a Plant-Made H1 VLP Influenza Vaccine in Adults

NCT01302990
View directory record Official record
Conditions
Flu
Interventions
Dose given at Day 0
Biological
Lead sponsor
Medicago
Industry
Eligibility
18 Years to 49 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Rockville, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 16, 2013 · Synced Oct 14, 2026, 4:58 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

The Immunologic Basis for an Attenuated Immune Response to the Influenza Vaccine After Repeated Annual Vaccination

NCT02876159
View directory record Official record
Conditions
Influenza
Interventions
2016-2017 Influenza Vaccine
Biological
Lead sponsor
Emory University
Other
Eligibility
20 Years to 30 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 12, 2018 · Synced Oct 14, 2026, 4:58 PM EDT