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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Completed Not applicable Interventional Accepts healthy volunteers Results available

DMID 21-0041; Influenza CVD 59000

NCT05666245
View directory record Official record
Conditions
Influenza
Interventions
Personal Protective Equipment (PPE) - Under High Air Hygiene, No Intervention - Under High Air Hygiene, Personal Protective Equipment (PPE) - Under Low Air Hygiene, No Intervention - Under Low Air Hygiene
Behavioral
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 59 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
2
States / cities
Baltimore, Maryland • College Park, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 25, 2025 · Synced Jun 10, 2026, 6:10 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Clinical Study to Evaluate the Immunogenicity and Safety of an Adjuvanted Quadrivalent Influenza Vaccine Compared With a Licensed Quadrivalent Vaccine in Adults 50 to 64 Years of Age

NCT05044195
View directory record Official record
Conditions
Influenza, Human
Interventions
aQIV, Comparator QIV
Biological
Lead sponsor
Seqirus
Industry
Eligibility
50 Years to 64 Years
Enrollment
2,044 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
12
States / cities
Mobile, Alabama • Tempe, Arizona • Atlantis, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Sep 27, 2023 · Synced Jun 10, 2026, 6:10 PM EDT
Completed No phase listed Observational Results available

Evaluating Modes of Influenza Transmission Observational Study of Community Acquired Influenza

NCT01769430
View directory record Official record
Conditions
Influenza Virus Infection Transmission in Humans
Interventions
Observational Study of influenza aerosol shedding -- No Intervention
Other
Lead sponsor
University of Maryland, College Park
Other
Eligibility
10 Years and older
Enrollment
178 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
College Park, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 24, 2025 · Synced Jun 10, 2026, 6:10 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Pilot Influenza Challenge Study

NCT07063849
View directory record Official record
Conditions
Influenza
Interventions
A/Texas
Biological
Lead sponsor
Daniel Hoft, MD, PhD
Other
Eligibility
18 Years to 45 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 13, 2025 · Synced Jun 10, 2026, 6:10 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Co-Administration of AS03 Adjuvanted A/H7N9 IIV With IIV4

NCT03318315
View directory record Official record
Conditions
Avian Influenza, Influenza, Influenza Immunisation
Interventions
AS03, Inactivated influenza H7N9 vaccine, Influenza Virus Quadrivalent Inactivated Vaccine, Phosphate Buffered Saline (PBS) diluent
Drug · Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
19 Years to 64 Years
Enrollment
149 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
4
States / cities
Birmingham, Alabama • Baltimore, Maryland • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 5, 2020 · Synced Jun 10, 2026, 6:10 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Different Formulations of Monovalent Influenza A/Astrakhan/3212/2020 Like (H5N8) Virus Vaccine With AS03 Adjuvant System in Medically Stable Adults

NCT05975840
View directory record Official record
Conditions
Influenza, Human
Interventions
FLU Q-PAN H5N8 375_B, FLU Q-PAN H5N8 375_A, FLU Q-PAN H5N8 750_B, FLU Q-PAN H5N8 750_A
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
518 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
20
States / cities
Anniston, Alabama • Mobile, Alabama • Tempe, Arizona + 17 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2025 · Synced Jun 10, 2026, 6:10 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Sanofi Pasteur Quadrivalent Influenza Vaccine (QIV) Pregnancy Registry

NCT01945424
View directory record Official record
Conditions
Pregnancy, Influenza
Interventions
Quadrivalent Influenza Vaccine (QIV)
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older · Female only
Enrollment
244 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2019
U.S. locations
5
States / cities
San Diego, California • Albany, New York • Columbus, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 11, 2020 · Synced Jun 10, 2026, 6:10 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Booster Trial to 07-0019 With A/Anhui/05 With and Without MF59

NCT00912496
View directory record Official record
Conditions
Influenza
Interventions
MF-59, A/Anhui/05, Placebo
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
637 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
10
States / cities
Atlanta, Georgia • Iowa City, Iowa • Baltimore, Maryland + 6 more
Source: ClinicalTrials.gov public record
Updated May 13, 2013 · Synced Jun 10, 2026, 6:10 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Study of the Pharmacology of Tamiflu in Pregnancy

NCT01203527
View directory record Official record
Conditions
H1N1 Influenza Treatment During Pregnancy
Interventions
Not listed
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
14 Years to 45 Years · Female only
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2012
U.S. locations
4
States / cities
Indianapolis, Indiana • Pittsburgh, Pennsylvania • Galveston, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 8, 2013 · Synced Jun 10, 2026, 6:10 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Development of Childhood Anti-Influenza Immunity

NCT03673345
View directory record Official record
Conditions
Influenza, Influenza Immunisation
Interventions
Influenza Virus Quadrivalent Inactivated Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
3 Months to 15 Years
Enrollment
125 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Mar 17, 2022 · Synced Jun 10, 2026, 6:10 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Role of CD4+ Memory Phenotype, Memory, and Effector T Cells in Vaccination and Infection

NCT03453801
View directory record Official record
Conditions
Influenza, Healthy
Interventions
Fluzone®, FluMist®
Biological
Lead sponsor
Stanford University
Other
Eligibility
6 Months to 10 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 12, 2020 · Synced Jun 10, 2026, 6:10 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

CSL H1N1 Influenza Vaccine Administered at Two Dose Levels in Adult and Elderly Populations

NCT00943488
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 and older
Enrollment
408 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
4
States / cities
Iowa City, Iowa • Cincinnati, Ohio • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 30, 2012 · Synced Jun 10, 2026, 6:10 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Immunogenicity and Safety of Pandemic Influenza Vaccines in Adults Aged 18 - 49 Years Old

NCT01236040
View directory record Official record
Conditions
Influenza
Interventions
GSK Biologicals' investigational vaccine GSK2590066A, GSK Biologicals' investigational vaccine GSK2592984A, GSK Biologicals' investigational vaccine GSK2340274A, GSK Biologicals' investigational vaccine GSK2340273A, Placebo
Biological · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 49 Years
Enrollment
521 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
4
States / cities
Anaheim, California • Stockbridge, Georgia • Lenexa, Kansas + 1 more
Source: ClinicalTrials.gov public record
Updated May 9, 2017 · Synced Jun 10, 2026, 6:10 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Strengthening Intentions

NCT07222774
View directory record Official record
Conditions
Influenza Vaccination, Behavior And Behavior Mechanism
Interventions
Experimental
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
Not listed
Enrollment
350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 29, 2025 · Synced Jun 10, 2026, 6:10 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Study of mRNA-1011.1, mRNA-1011.2, and mRNA-1012.1 Candidate Seasonal Influenza Vaccines in Healthy Adults

NCT05827068
View directory record Official record
Conditions
Seasonal Influenza
Interventions
mRNA-1011.1, mRNA-1011.2, mRNA-1012.1, mRNA-1010, mRNA-1010.2, mRNA-1010.3
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
50 Years to 75 Years
Enrollment
698 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
22
States / cities
Lakewood, California • Long Beach, California • Fort Collins, Colorado + 19 more
Source: ClinicalTrials.gov public record
Updated Feb 2, 2025 · Synced Jun 10, 2026, 6:10 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Oseltamivir Treatment for Children Less Than 24 Months of Age With Influenza

NCT00391768
View directory record Official record
Conditions
Influenza
Interventions
oseltamivir (Tamiflu®)
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Up to 23 Months
Enrollment
87 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
29
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Long Beach, California + 24 more
Source: ClinicalTrials.gov public record
Updated Apr 30, 2013 · Synced Jun 10, 2026, 6:10 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Age and Response to Flu Vaccines

NCT03328325
View directory record Official record
Conditions
Influenza, Influenza Immunisation
Interventions
Influenza Virus Quadrivalent Inactivated Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
9 Years to 99 Years
Enrollment
152 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
2
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated May 23, 2021 · Synced Jun 10, 2026, 6:10 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Reactogenicity, Safety and Immunogenicity of GlaxoSmithKline (GSK) Biologicals' Investigational Supra-seasonal Universal Influenza Vaccines - Inactivated (SUIVs) (GSK3816302A) in Healthy Adults Aged 18 to 39 Years

NCT03275389
View directory record Official record
Conditions
Influenza, Human
Interventions
D-SUIV cH8/1N1+AS03, D-SUIV cH5/1N1+AS03, D-SUIV cH11/1N1+AS03, D-SUIV cH8/1N1+AS01, D-SUIV cH5/1N1+AS01, D-SUIV cH11/1N1+AS01, D-SUIV cH8/1N1, D-SUIV cH5/1N1, D-SUIV cH11/1N1, Placebo, Fluarix Quadrivalent
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 39 Years
Enrollment
470 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
5
States / cities
South Miami, Florida • Wichita, Kansas • Rochester, New York + 2 more
Source: ClinicalTrials.gov public record
Updated May 6, 2021 · Synced Jun 10, 2026, 6:10 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Study of Inactivated, Split-Virion Influenza Vaccine Compared With Standard Fluzone Vaccine in Infants and Children

NCT00391391
View directory record Official record
Conditions
Orthomyxoviridae Infection, Influenza, Myxovirus Infection
Interventions
Split, Inactivated, Trivalent Influenza Vaccine, Split, Inactivated, Trivalent Influenza Vaccine ( Fluzone® 2006/2007 Formulation)
Biological
Lead sponsor
Sanofi
Industry
Eligibility
6 Months to 8 Years
Enrollment
520 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
19
States / cities
Harrisburg, Arkansas • Little Rock, Arkansas • Trumann, Arkansas + 15 more
Source: ClinicalTrials.gov public record
Updated Nov 30, 2011 · Synced Jun 10, 2026, 6:10 PM 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, 6:10 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

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
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
2
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated May 13, 2025 · Synced Jun 10, 2026, 6:10 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Observational Digital Biomarker Discovery in Respiratory Virus Challenge Studies

NCT04772170
View directory record Official record
Conditions
Influenza, Respiratory Virus, Coronavirus
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Jun 10, 2026, 6:10 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Memory for Flu Facts and Myths and Effects on Vaccine Intentions

NCT00296270
View directory record Official record
Conditions
Influenza Vaccines
Interventions
Memory for truth
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 26 Years
Enrollment
175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 23, 2006 · Synced Jun 10, 2026, 6:10 PM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

Study of the Protective Effect of an Injectable Influenza Vaccine Against Influenza Illness in Adults Under 50 y.o.

NCT00216242
View directory record Official record
Conditions
Influenza
Interventions
Influenza virus vaccine (Fluviral), Saline placebo
Biological
Lead sponsor
ID Biomedical Corporation, Quebec
Industry
Eligibility
18 Years to 49 Years
Enrollment
7,400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
43
States / cities
Sacramento, California • San Francisco, California • Denver, Colorado + 34 more
Source: ClinicalTrials.gov public record
Updated Dec 10, 2006 · Synced Jun 10, 2026, 6:10 PM EDT