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ClinicalTrials.gov public records Last synced Oct 26, 2026, 8:52 PM EDT

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Showing 1–24 of 73 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Influenza Prevention Clear all
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Influenza Virus Vaccine Plus Vitamin A and D Supplements for Prevention of Respiratory Virus Infections in Children

NCT02649192
View directory record Official record
Conditions
Healthy Participants
Interventions
Influenza virus vaccine, Vitamins A and D, Placebo
Biological · Dietary Supplement · Other
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
2 Years to 8 Years
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 29, 2019 · Synced Oct 26, 2026, 8:52 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

Meditation and Exercise for Prevention of Acute Respiratory Infection

NCT01057771
View directory record Official record
Conditions
Acute Respiratory Infection
Interventions
Meditation, Exercise
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
50 Years and older
Enrollment
154 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 12, 2015 · Synced Oct 26, 2026, 8:52 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Evaluation of Alternative Oseltamivir (Tamiflu) Dosing Strategies.

NCT00304434
View directory record Official record
Conditions
Influenza
Interventions
Oseltamivir, Probenecid
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Sep 23, 2009 · Synced Oct 26, 2026, 8:52 PM 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 26, 2026, 8:52 PM EDT
Completed Not applicable Interventional

Evaluation of the School Kids Influenza Prevention Project

NCT03307642
View directory record Official record
Conditions
Childhood Influenza Vaccination, School-located Influenza Vaccination
Interventions
Text message notification
Other
Lead sponsor
University of Rochester
Other
Eligibility
4 Years to 19 Years
Enrollment
18,540 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Mar 12, 2018 · Synced Oct 26, 2026, 8:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluation of the Safety and Immunogenicity of a Live Attenuated Virus Vaccine for the Prevention of H2N3 Influenza

NCT01175122
View directory record Official record
Conditions
Influenza A Virus Infection
Interventions
H2N3 MO 2003/AA ca Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 42 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Feb 11, 2013 · Synced Oct 26, 2026, 8:52 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

A Phase 2 Study to Evaluate the Efficacy and Safety of VIR-2482 for the Prevention of Illness Due to Influenza A

NCT05567783
View directory record Official record
Conditions
Influenza A
Interventions
VIR-2482 (450 mg), VIR-2482 (1200 mg), Placebo
Biological
Lead sponsor
Vir Biotechnology, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
2,977 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
51
States / cities
Anniston, Alabama • Mobile, Alabama • Tempe, Arizona + 45 more
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 26, 2026, 8:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study To Learn About The Study Vaccine (Called Self-Amplifying Ribonucleic Acid (RNA)) For The Prevention of Influenza

NCT05227001
View directory record Official record
Conditions
Influenza, Human
Interventions
PF-07852352 Influenza saRNA 1, PF-07836391 Influenza saRNA, PF-07836394 Influenza saRNA, PF-07836395 Influenza saRNA, PF-07836396 Influenza saRNA, PF-07867246 Influenza saRNA, Placebo, Quadrivalent influenza vaccine (QIV), PF-07871987 Influenza saRNA, PF-07914705 Influenza saRNA, PF-07915048 Influenza saRNA
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 49 Years
Enrollment
440 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
24
States / cities
Phoenix, Arizona • Walnut Creek, California • Greenacres City, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Mar 20, 2026 · Synced Oct 26, 2026, 8:52 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Fluad vs. Fluzone High-Dose Vaccine Effectiveness Among Adults ≥65 Years

NCT06029933
View directory record Official record
Conditions
Influenza, Community-acquired Pneumonia, Cardiovascular Events
Interventions
Adjuvanted Quadrivalent Inactivated Influenza Vaccine (aIIV4), High-Dose Quadrivalent Inactivated Influenza Vaccine (HD-IIV4)
Biological
Lead sponsor
Kaiser Permanente
Other
Eligibility
65 Years and older
Enrollment
1,500,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Aug 5, 2026 · Synced Oct 26, 2026, 8:52 PM EDT
Completed Phase 1 Interventional

Poly-ICLC to Prevent Respiratory Viral Infections A Safety Study

NCT00646152
View directory record Official record
Conditions
Influenza, Severe Acute Respiratory Distress Syndrome, Smallpox, Ebola, Unknown Respiratory Viruses
Interventions
Poly-ICLC
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 5, 2018 · Synced Oct 26, 2026, 8:52 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety of 3 New 6:2 Influenza Virus Reassortants in Adults

NCT01579916
View directory record Official record
Conditions
Influenza
Interventions
Trivalent Influenza Virus Vaccine, Placebo
Biological · Other
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 49 Years
Enrollment
303 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
3
States / cities
Miami, Florida • Stockbridge, Georgia • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 3, 2014 · Synced Oct 26, 2026, 8:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Bird Flu Virus Vaccine (H9N2) in Healthy Adults (Study B)

NCT00380237
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H9N2 (6-2) AA ca Reassortant (A/Chicken/Hong Kong/G9/97 x A/Ann Arbor/6/60 ca)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 21, 2008 · Synced Oct 26, 2026, 8:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacodynamic Open-Label Trial With VXA-A1.1 Oral H1 Vaccine in Healthy Adults

NCT03121339
View directory record Official record
Conditions
Seasonal Influenza Preventative Vaccine Pharmacodynamics
Interventions
VXA-A1.1 H1 Tablet Vaccine (small), VXA-A1.1 H1 Tablet Vaccine (large)
Biological
Lead sponsor
Vaxart
Industry
Eligibility
18 Years to 49 Years · Male only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated May 30, 2018 · Synced Oct 26, 2026, 8:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Mail Outreach To Increase Vaccination Acceptance Through Engagement

NCT02243774
View directory record Official record
Conditions
Influenza, Human, Influenza, Human Flu
Interventions
Core letter signed by Surgeon General, Core letter signed by the Director of the National Vaccine Program, Core letter signed by Surgeon General + implementation prompt, Core letter signed by SG + enhanced implementation prompt
Behavioral
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
66 Years and older
Enrollment
228,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 12, 2017 · Synced Oct 26, 2026, 8:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to Recombinant Live-Attenuated Influenza H6N1 Virus Vaccine Vaccine

NCT00734175
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H6N1 Teal HK 97/AA ca recombinant vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2008
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 7, 2009 · Synced Oct 26, 2026, 8:52 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Immunogenicity of a Live Attenuated Virus Vaccine to Prevent Influenza H3N2v Disease

NCT02883426
View directory record Official record
Conditions
Influenza
Interventions
H3N2v MN 2010/AA ca live attenuated influenza vaccine (LAIV), H3N2v inactivated subvirion influenza vaccine, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Years to 26 Years
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2016
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated May 3, 2018 · Synced Oct 26, 2026, 8:52 PM EDT
Recruiting Phase 3 Interventional

A Study to Evaluate the Safety and Efficacy of MK-1406/CD388 for Prevention of Influenza (MK-1406-005/CD388.SQ.3.06)

NCT07159763
View directory record Official record
Conditions
Influenza
Interventions
MK-1406, Placebo
Combination Product
Lead sponsor
Cidara Therapeutics Inc., a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Industry
Eligibility
12 Years and older
Enrollment
10,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
120
States / cities
Anniston, Alabama • Cullman, Alabama • Glendale, Arizona + 104 more
Source: ClinicalTrials.gov public record
Updated Oct 15, 2026 · Synced Oct 26, 2026, 8:52 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Evaluate the Shedding and Immunogencity of Different Formulations of FluMist in Children 24 to <48 Months of Age

NCT03143101
View directory record Official record
Conditions
Influenza, Healthy
Interventions
FluMist trivalent (2015-2016), FluMist Quadrivalent (2015-2016), FluMist Quadrivalent (2017-2018)
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
24 Months to 47 Months
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
12
States / cities
Savannah, Georgia • Bardstown, Kentucky • St Louis, Missouri + 9 more
Source: ClinicalTrials.gov public record
Updated Dec 11, 2018 · Synced Oct 26, 2026, 8:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immunogenicity of Live Influenza A Vaccine for Avian Influenza H7N7

NCT00922259
View directory record Official record
Conditions
Influenza A
Interventions
Influenza A H7N7 vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Feb 13, 2013 · Synced Oct 26, 2026, 8:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of Free Air Portable Air Powered Respirator

NCT02487147
View directory record Official record
Conditions
Influenza
Interventions
Free Air Portable Air Powered Respirator, N95 Respirator
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 49 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 4, 2022 · Synced Oct 26, 2026, 8:52 PM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

Bifidobacterium Lactis HN019 Supplementation for Prevention of Influenza Infection in Healthy Adults

NCT01258842
View directory record Official record
Conditions
Influenza
Interventions
Bifidobacterium lactis HN019, Placebo
Dietary Supplement
Lead sponsor
Fonterra Research Centre
Industry
Eligibility
18 Years to 60 Years
Enrollment
426 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
2
States / cities
Coral Gables, Florida • Rochester, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 13, 2010 · Synced Oct 26, 2026, 8:52 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 26, 2026, 8:52 PM EDT
Completed Phase 4 Interventional Results available

Influenza Vaccination for Flu Prevention in Patients With Plasma Cell Disorders

NCT04080531
View directory record Official record
Conditions
Plasma Cell Neoplasm
Interventions
Pneumococcal 13-valent Conjugate Vaccine, Trivalent Influenza Vaccine
Biological
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 28, 2025 · Synced Oct 26, 2026, 8:52 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Study Comparing the Immune Response of Fluarix and Fluzone Influenza Vaccines

NCT00197288
View directory record Official record
Conditions
Influenza
Interventions
Influenza
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
1,847 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
15
States / cities
Clearwater, Florida • Evansville, Indiana • Baltimore, Maryland + 12 more
Source: ClinicalTrials.gov public record
Updated Jan 18, 2017 · Synced Oct 26, 2026, 8:52 PM EDT