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ClinicalTrials.gov public records Last synced Oct 23, 2026, 5:06 AM EDT

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Showing 841–864 of 1,140 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Flu Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Effect of a Fermented Soy Product on Cognition, Immune Status and Vaccine

NCT04866576
View directory record Official record
Conditions
Cognitive Change, Inflammation, Immune Response
Interventions
Q CAN PLUS, Placebo
Dietary Supplement
Lead sponsor
Loma Linda University
Other
Eligibility
65 Years to 80 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Dec 9, 2025 · Synced Oct 23, 2026, 5:06 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Study of Fluzone® High-Dose Vaccine Compared With Fluzone® Vaccine In Elderly Adults

NCT01427309
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
65 Years and older
Enrollment
31,989 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
105
States / cities
Mobile, Alabama • Chandler, Arizona • Glendale, Arizona + 88 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2015 · Synced Oct 23, 2026, 5:06 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Immunogenicity and Safety of Seqirus Quadrivalent Influenza Vaccine (QIV) in a Pediatric Population 6 Months Through 59 Months of Age.

NCT02914275
View directory record Official record
Conditions
Influenza, Human
Interventions
Seqirus Quadrivalent Inactivated Influenza Vaccine, Comparator Quadrivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
Seqirus
Industry
Eligibility
6 Months to 59 Months
Enrollment
2,250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
39
States / cities
Birmingham, Alabama • Mobile, Alabama • Anaheim, California + 27 more
Source: ClinicalTrials.gov public record
Updated Jan 23, 2019 · Synced Oct 23, 2026, 5:06 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 23, 2026, 5:06 AM EDT
Completed Phase 2 Interventional

Efficacy and Safety of Norketotifen in Uncomplicated Influenza-like Illness

NCT04610047
View directory record Official record
Conditions
Influenza, Influenza -Like Illness
Interventions
Norketotifen, Placebo
Drug
Lead sponsor
Emergo Therapeutics, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
315 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
20
States / cities
Phoenix, Arizona • Los Angeles, California • DeBary, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Jan 30, 2023 · Synced Oct 23, 2026, 5:06 AM EDT
Suspended Not applicable Interventional

ORCHARDS-AIR Study

NCT07298967
View directory record Official record
Conditions
Acute Respiratory Infection, Influenza-like Illness
Interventions
Nasal swab, Indoor air quality monitor
Diagnostic Test · Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
4 Years and older
Enrollment
422 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 12, 2026 · Synced Oct 23, 2026, 5:06 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Comparison of the Safety of Flublok® Versus Licensed IIV in Healthy, Medically Stable Adults ≥ 50 Years of Age

NCT01825200
View directory record Official record
Conditions
Influenza
Interventions
Flublok, Afluria
Biological
Lead sponsor
Protein Sciences Corporation
Industry
Eligibility
50 Years and older
Enrollment
2,640 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
14
States / cities
Tucson, Arizona • Coral Gables, Florida • Savannah, Georgia + 11 more
Source: ClinicalTrials.gov public record
Updated Feb 18, 2015 · Synced Oct 23, 2026, 5:06 AM EDT
Completed Not applicable Interventional Results available

Behavioral Economics to Improve Flu Vaccination Using EHR Nudges Replication

NCT06626321
View directory record Official record
Conditions
Behavior, Health, Flu, Flu Vaccination
Interventions
Pre-visit patient text messaging, Default pended order, Monthly peer comparison feedback, High risk bidirectional pre-visit text messaging
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
50 Years and older
Enrollment
26,248 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Lancaster, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 30, 2026 · Synced Oct 23, 2026, 5:06 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Impact of Metabolic Syndrome on Flu Vaccine Efficacy

NCT02653495
View directory record Official record
Conditions
Immune Deficiency, Metabolic Syndrome
Interventions
Influenza vaccine
Biological
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 28, 2017 · Synced Oct 23, 2026, 5:06 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Collection of Serum Samples From Children and Older Adults Receiving the 2019-2020 Formulations of Fluzone® Quadrivalent and Fluzone® High-Dose Influenza Vaccines, Respectively

NCT04109222
View directory record Official record
Conditions
Influenza
Interventions
Fluzone Quadrivalent vaccine, no preservative (0.5-mL), 2019-2020 formulation, Fluzone High-Dose vaccine, 2019-2020 formulation
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months to 83 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
2
States / cities
Bardstown, Kentucky • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Sep 12, 2025 · Synced Oct 23, 2026, 5:06 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Influenza HA Ferritin Vaccine, Alone or in Prime-Boost Regimens With an Influenza DNA Vaccine in Healthy Adults

NCT03186781
View directory record Official record
Conditions
Influenza
Interventions
VRC-FLUNPF081-00-VP (HA-F A/Sing), VRC-FLUDNA082-00-VP (DNA A/Sing)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 16, 2021 · Synced Oct 23, 2026, 5:06 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 Oct 23, 2026, 5:06 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

H5N1 Vaccination With and Without AS03: Systems Biology Analysis

NCT01573312
View directory record Official record
Conditions
Influenza
Interventions
ASO3 Adjuvant, Influenza A/H5N1 Vaccine
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 21, 2019 · Synced Oct 23, 2026, 5:06 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 23, 2026, 5:06 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Influenza Vaccine in Lung Transplant Patients - Seroprotection

NCT04531657
View directory record Official record
Conditions
Influenza
Interventions
Influenza vaccine
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 23, 2020 · Synced Oct 23, 2026, 5:06 AM EDT
Withdrawn Phase 2 Interventional

High Dose Influenza in Immunosuppressed Subjects

NCT00766285
View directory record Official record
Conditions
Influenza
Interventions
Trivalent inactivated influenza vaccine, Trivalent Baculovirus-expressed Influenza HA vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2010
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 3, 2015 · Synced Oct 23, 2026, 5:06 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Study of CD388 for the Prevention of Influenza in Subjects Not at Risk for Influenza Complications

NCT06609460
View directory record Official record
Conditions
Influenza
Interventions
CD388 Injection, Placebo
Combination Product
Lead sponsor
Cidara Therapeutics Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Industry
Eligibility
18 Years to 63 Years
Enrollment
5,071 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
56
States / cities
Anniston, Alabama • Cullman, Alabama • Tempe, Arizona + 51 more
Source: ClinicalTrials.gov public record
Updated Jun 18, 2026 · Synced Oct 23, 2026, 5:06 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Durability and Impact of the Seasonal Influenza Vaccine on H5 Induced B Cell Response

NCT03701061
View directory record Official record
Conditions
Influenza A Subtype H5N1 Infection
Interventions
Seasonal Influenza Vaccine
Biological
Lead sponsor
Emory University
Other
Eligibility
Not listed
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 11, 2020 · Synced Oct 23, 2026, 5:06 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Phase 1/2 Clinical Trial of an Alphavirus Replicon Vaccine for Influenza

NCT00440362
View directory record Official record
Conditions
Influenza
Interventions
AVX502, Placebo
Biological
Lead sponsor
AlphaVax, Inc.
Industry
Eligibility
18 Years to 40 Years
Enrollment
216 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Nov 10, 2008 · Synced Oct 23, 2026, 5:06 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 23, 2026, 5:06 AM 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 23, 2026, 5:06 AM EDT
Completed No phase listed Observational

"Quidel Reader Influenza A + B Test 510(k) and CLIA Waiver Field Study"

NCT01309568
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
Quidel Corporation
Industry
Eligibility
Not listed
Enrollment
2,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
16
States / cities
Carlsbad, California • Panorama City, California • San Diego, California + 13 more
Source: ClinicalTrials.gov public record
Updated May 12, 2011 · Synced Oct 23, 2026, 5:06 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Immunogenicity & Safety of GSK's Avian Flu Vaccine 1557484A Given to Adults Aged 18-64 Years

NCT00771615
View directory record Official record
Conditions
Influenza
Interventions
GSK A/turkey H5N1 Influenza vaccine
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 64 Years
Enrollment
469 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
7
States / cities
Huntsville, Alabama • Anaheim, California • Miami, Florida + 4 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2018 · Synced Oct 23, 2026, 5:06 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study to Evaluate the Immunogenicity and Safety of GlaxoSmithKline (GSK) Biologicals' Quadrivalent Influenza Vaccine (GSK2282512A) Compared to Fluzone® Quadrivalent in Children 6 to 35 Months of Age

NCT02242643
View directory record Official record
Conditions
Influenza
Interventions
FluLaval™ Quadrivalent, Fluzone® Quadrivalent
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
6 Months to 35 Months
Enrollment
2,432 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
64
States / cities
Birmingham, Alabama • Dothan, Alabama • Tucson, Arizona + 56 more
Source: ClinicalTrials.gov public record
Updated Sep 7, 2018 · Synced Oct 23, 2026, 5:06 AM EDT