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ClinicalTrials.gov public records Last synced Oct 17, 2026, 12:09 PM EDT

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Showing 865–888 of 931 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Orthomyxoviridae Infection Clear all
Completed No phase listed Observational Accepts healthy volunteers

Cigarette Smoke and Susceptibility to Influenza Infection

NCT00448617
View directory record Official record
Conditions
Healthy
Interventions
Not listed
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 35 Years
Enrollment
138 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2011
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 29, 2015 · Synced Oct 17, 2026, 12:09 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Pilot Study of Genotypic Analysis

NCT00421837
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
50 Years and older
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 16, 2013 · Synced Oct 17, 2026, 12:09 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Plasmablast Trafficking and Antibody Response in Influenza Vaccination (SLVP021 2011-2014)

NCT02141581
View directory record Official record
Conditions
Influenza
Interventions
Fluzone® (IM), Fluzone® Intradermal (ID), 2011-2012 FluMist®
Biological
Lead sponsor
Stanford University
Other
Eligibility
8 Years to 34 Years
Enrollment
86 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated May 7, 2018 · Synced Oct 17, 2026, 12:09 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Sanofi H1N1 Influenza Vaccine Administered at Different Dose Levels With and Without AS03 Adjuvant in Healthy Adult and Elderly Populations

NCT00963157
View directory record Official record
Conditions
Influenza
Interventions
AS03, Influenza Virus Vaccine, Monovalent A/H1N1 A/California/7/2009 NYMC X-179A
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
789 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
7
States / cities
Stanford, California • Decatur, Georgia • Iowa City, Iowa + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 24, 2014 · Synced Oct 17, 2026, 12:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Persuasion in Medicine: Experimental Evidence on Sender and Signal Effects

NCT04160975
View directory record Official record
Conditions
Flu, Human, Influenza, Human, Covid19
Interventions
Video about safety and effectiveness of adult seasonal flu vaccination
Behavioral
Lead sponsor
Harvard University
Other
Eligibility
18 Years to 51 Years · Male only
Enrollment
3,245 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 29, 2021 · Synced Oct 17, 2026, 12:09 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Immunologic Response to FluMist vs. Flucelvax

NCT03982069
View directory record Official record
Conditions
Influenza, Human, Immune Response
Interventions
FluMist live attenuated influenza vaccine, Flucelvax inactivated influenza vaccine
Biological
Lead sponsor
Richard Zimmerman MD
Other
Eligibility
4 Years to 21 Years
Enrollment
465 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 14, 2021 · Synced Oct 17, 2026, 12:09 PM EDT
Terminated Phase 4 Interventional Results available

A Study of Tamiflu (Oseltamivir) for Treatment of Influenza With a Focus on (H1N1) 2009 Flu Strain

NCT01032837
View directory record Official record
Conditions
Influenza
Interventions
Oseltamivir, Placebo
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
1 Year and older
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
100
States / cities
Tuscaloosa, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 91 more
Source: ClinicalTrials.gov public record
Updated Oct 2, 2012 · Synced Oct 17, 2026, 12:09 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Evaluate Immunogenicity, Safety and Tolerability of Adjuvanted and Non-Adjuvanted H2N3 Influenza Vaccines in Adults

NCT05875961
View directory record Official record
Conditions
Influenza, Human, Infections, Respiratory Tract Infections, Virus Diseases, Infection Viral
Interventions
Low dose A/H2N3c + standard dose MF59, Intermediate dose A/H2N3c + standard dose MF59, High dose A/H2N3c + standard dose MF59, High dose A/H2N3c non-adjuvanted, Lowest dose A/H2N3c + high dose MF59, Low dose A/H2N3c + high dose MF59
Biological
Lead sponsor
Seqirus
Industry
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
3
States / cities
Rockville, Maryland • Lincoln, Nebraska • Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Oct 17, 2026, 12:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study of Seasonal Influenza Vaccine Against H5N1 Avian Influenza Virus

NCT01044095
View directory record Official record
Conditions
Influenza
Interventions
FluMist® live, attenuated, intranasal seasonal influenza vaccine, Fluzone® inactivated influenza virus vaccine
Biological
Lead sponsor
Armed Forces Research Institute of Medical Sciences, Thailand
Government
Eligibility
18 Years to 49 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
0
States / cities
Not listed
Source: ClinicalTrials.gov public record
Updated Jul 23, 2013 · Synced Oct 17, 2026, 12:09 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Project IMPACT Immunizations (IMProving America's Communities Together)

NCT02584036
View directory record Official record
Conditions
Influenza
Interventions
Vaccine administration by a pharmacist, Unmet vaccination needs identified and met, Vaccination forecast review and patient education
Biological · Behavioral
Lead sponsor
American Pharmacists Association Foundation
Other
Eligibility
18 Years and older
Enrollment
1,080 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
8
States / cities
Belfair, Washington • Cheney, Washington • Eatonville, Washington + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2016 · Synced Oct 17, 2026, 12:09 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Efficacy Study of an Investigational Influenza Vaccine (Vero Cell Derived) to Prevent Culture Confirmed Influenza Infection (CCII)

NCT00566345
View directory record Official record
Conditions
Influenza
Interventions
Inactivated seasonal influenza vaccine (split virus, Vero cell-derived), Phosphate buffered saline
Biological · Other
Lead sponsor
Alachua Government Services, Inc.
Industry
Eligibility
18 Years to 49 Years
Enrollment
3,670 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
34
States / cities
Tucson, Arizona • Anaheim, California • Sacramento, California + 31 more
Source: ClinicalTrials.gov public record
Updated Oct 17, 2023 · Synced Oct 17, 2026, 12:09 PM 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 17, 2026, 12:09 PM 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 Oct 17, 2026, 12:09 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A/H5N1 Vaccine in Healthy Children Aged 2-9 Years

NCT00133536
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
2 Years to 9 Years
Enrollment
157 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
4
States / cities
Torrance, California • Baltimore, Maryland • St Louis, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Oct 17, 2026, 12:09 PM EDT
Completed Phase 4 Interventional

A Study of Tamiflu (Oseltamivir) for Seasonal Prophylaxis of Influenza in Children.

NCT00412555
View directory record Official record
Conditions
Influenza
Interventions
oseltamivir [Tamiflu]
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
1 Year to 12 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
4
States / cities
West Palm Beach, Florida • Pittsburgh, Pennsylvania • Jackson, Tennessee + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2020 · Synced Oct 17, 2026, 12:09 PM 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 Oct 17, 2026, 12:09 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immunogenicity of a Monovalent mRNA Vaccine Encoding Influenza Hemagglutinin in Adult Participants 18 Years of Age and Older

NCT06118151
View directory record Official record
Conditions
Influenza, Influenza Immunization
Interventions
Influenza Hemagglutinin mRNA vaccine, Quadrivalent Recombinant Influenza Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
388 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
20
States / cities
Rolling Hills Estates, California • San Diego, California • Coral Gables, Florida + 14 more
Source: ClinicalTrials.gov public record
Updated Nov 7, 2023 · Synced Oct 17, 2026, 12:09 PM EDT
Terminated Phase 1 Interventional

Brain Stem Gliomas Treated With Adoptive Cellular Therapy During Focal Radiotherapy Recovery Alone or With Dose-intensified Temozolomide (Phase I)

NCT03396575
View directory record Official record
Conditions
Diffuse Intrinsic Pontine Glioma (DIPG), Brain Stem Glioma
Interventions
TTRNA-DC vaccines with GM-CSF, TTRNA-xALT, Cyclophosphamide + Fludarabine Lymphodepletive Conditioning, Dose-Intensified TMZ, Td vaccine, Autologous Hematopoietic Stem Cells (HSC)
Biological · Drug
Lead sponsor
University of Florida
Other
Eligibility
3 Years to 30 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Oct 29, 2025 · Synced Oct 17, 2026, 12:09 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Dime La VerDAD: Verify, Debunk, and Disseminate

NCT06417762
View directory record Official record
Conditions
Influenza, COVID-19, Communication Research, Health Behavior, Respiratory Viral Infection
Interventions
Science Communication Curriculum Cohort 1, Science communication curriculum Cohort 2, Science communication curriculum Cohort 3, Science communication curriculum Cohort 4
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 99 Years
Enrollment
1,400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
4
States / cities
Chicago, Illinois • Iowa City, Iowa • Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 17, 2026, 12:09 PM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

A Study to Evaluate the Immune Response and Safety of a Vaccine Against Influenza in Adults 18-64 Years of Age

NCT07851246
View directory record Official record
Conditions
Influenza, Human
Interventions
mRNA Seasonal Flu vaccine, Comparator 1, Comparator 2
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 64 Years
Enrollment
3,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
12
States / cities
Glendale, Arizona • Tucson, Arizona • San Diego, California + 9 more
Source: ClinicalTrials.gov public record
Updated Oct 9, 2026 · Synced Oct 17, 2026, 12:09 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Woodsmoke Exposure, Influenza Infection, and Nasal Immunity

NCT06841913
View directory record Official record
Conditions
Smoke Exposure, Influenza
Interventions
LAIV nasal vaccine is chosen as a model viral infection, Wood smoke, Placebo for LAIV nasal vaccine is chosen as a model viral infection, Placebo for Wood Smoke (clean Air Exposure)
Biological · Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 49 Years
Enrollment
112 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Oct 17, 2026, 12:09 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of mRNA-1010 Compared With a Licensed Influenza Vaccine in Adults ≥50 Years of Age

NCT06602024
View directory record Official record
Conditions
Seasonal Influenza
Interventions
mRNA-1010, Fluarix®, Influsplit® Tetra, Fluarix Tetra, Alpharix® Tetra
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
50 Years and older
Enrollment
40,805 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
188
States / cities
Anniston, Alabama • Athens, Alabama • Birmingham, Alabama + 150 more
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 17, 2026, 12:09 PM EDT
Completed No phase listed Observational

FLU A+B Nasal Swab Clinical Study

NCT00636662
View directory record Official record
Conditions
Influenza
Interventions
Non-invasive diagnostic testing
Other
Lead sponsor
Response Biomedical Corp.
Industry
Eligibility
Not listed
Enrollment
800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
4
States / cities
Chicago, Illinois • St Louis, Missouri • Winston-Salem, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 27, 2019 · Synced Oct 17, 2026, 12:09 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

First-in-Human Study of VNT-101: Safety, Tolerability, and Pharmacokinetics

NCT07169318
View directory record Official record
Conditions
Influenza
Interventions
Placebo for VNT-101, VNT-101
Other · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 59 Years
Enrollment
78 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Oct 17, 2026, 12:09 PM EDT