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ClinicalTrials.gov public records Last synced Sep 30, 2026, 11:15 AM EDT

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Showing 49–72 of 605 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Influenza A Virus Clear all
Completed No phase listed Observational

A Pilot Study of Influenza Viruses Isolated From Immunocompromised Children and Adolescents

NCT02352389
View directory record Official record
Conditions
Influenza, Human
Interventions
Blood sample, Nasal swab, Oropharyngeal swab, Stool sample, Symptom checklist
Other
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
Up to 21 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2022
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 12, 2023 · Synced Sep 30, 2026, 11:15 AM EDT
Completed Phase 2 Interventional Results available

Safety of and Immune Response to an H1N1 Influenza Vaccine in HIV Infected Pregnant Women

NCT00992017
View directory record Official record
Conditions
HIV Infections, H1N1 Influenza Virus
Interventions
Influenza A (H1N1) monovalent vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 39 Years · Female only
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
29
States / cities
Alhambra, California • La Jolla, California • Long Beach, California + 22 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2021 · Synced Sep 30, 2026, 11:15 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study of Different Formulations of an Adjuvanted A/H1N1 Pandemic Vaccine in Healthy Adults and the Elderly

NCT00952276
View directory record Official record
Conditions
Influenza, Swine-origin A/H1N1 Influenza
Interventions
Monovalent Subvirion A/H1N1 influenza vaccine with adjuvant, Monovalent Subvirion A/H1N1 influenza vaccine, Normal saline solution
Biological
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
548 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
15
States / cities
Anaheim, California • Fountain Valley, California • South Miami, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 3, 2011 · Synced Sep 30, 2026, 11:15 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Atopic Dermatitis Research Network (ADRN) Influenza Vaccine Study

NCT01737710
View directory record Official record
Conditions
Dermatitis, Atopic
Interventions
Fluzone® Intradermal Vaccine, Fluzone® (Intramuscular) vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years · Female only
Enrollment
368 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
5
States / cities
Denver, Colorado • Chicago, Illinois • Boston, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 29, 2017 · Synced Sep 30, 2026, 11:15 AM EDT
Completed No phase listed Observational

Study to Determine if the Flu Vaccine Increases the Risk of Muscle Damage in Participants Taking Drugs That Block Certain Proteins Made by Some Types of Immune System Cells

NCT03644498
View directory record Official record
Conditions
Cancer
Interventions
Non-Interventional
Other
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
1,056 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Princeton, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 18, 2024 · Synced Sep 30, 2026, 11:15 AM EDT
Completed Phase 3 Interventional Results available

Study to Assess the Safety, Pharmacokinetics, and Efficacy of Baloxavir Marboxil in Healthy Pediatric Participants With Influenza-Like Symptoms

NCT03629184
View directory record Official record
Conditions
Influenza
Interventions
Baloxavir Marboxil, Oseltamivir
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
1 Year to 11 Years
Enrollment
173 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
27
States / cities
Birmingham, Alabama • Harrisburg, Arkansas • Jonesboro, Arkansas + 22 more
Source: ClinicalTrials.gov public record
Updated Apr 29, 2020 · Synced Sep 30, 2026, 11:15 AM EDT
Completed No phase listed Observational

Detection of Influenza A, Influenza B, and RSV Using the Liat™ Assays on the Liat™ Analyzer

NCT02067286
View directory record Official record
Conditions
Influenza A, Influenza B, Respiratory Syncytial Virus (RSV)
Interventions
Not listed
Lead sponsor
IQuum, Inc.
Industry
Eligibility
Not listed
Enrollment
1,642 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
8
States / cities
Delray Beach, Florida • Savannah, Georgia • Indianapolis, Indiana + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 31, 2016 · Synced Sep 30, 2026, 11:15 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

H5 Vaccine Alone or With Adjuvant in Healthy Adults

NCT00296634
View directory record Official record
Conditions
Influenza
Interventions
Aluminum hydroxide, Inactivated Influenza A/H5N1 Vaccine (sanofi pasteur pre-adsorbed)
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
4
States / cities
Baltimore, Maryland • Rochester, New York • Durham, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Sep 30, 2026, 11:15 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Testing Multiple Behavioral Science Strategies to Increase Flu-Shot Rates at a Large Retail Pharmacy

NCT04590066
View directory record Official record
Conditions
Influenza, Human
Interventions
Flu shot text messages
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
734,383 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 1, 2021 · Synced Sep 30, 2026, 11:15 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Study of a Flu Vaccine in Children

NCT00001127
View directory record Official record
Conditions
Influenza
Interventions
Influenza virus vaccine (CAIV-T)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Months to 18 Years
Enrollment
15,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Ends 2005
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Sep 30, 2026, 11:15 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

H3N2 M2SR in Pediatric Population

NCT03553940
View directory record Official record
Conditions
Influenza, Influenza Immunisation
Interventions
Influenza Virus Monovalent A/H3N2/Bris 10 M2SR Live Vaccine, Placebo, Quadrivalent MDCK Inactivated Influenza Vaccine
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
9 Years to 17 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 21, 2021 · Synced Sep 30, 2026, 11:15 AM 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 Sep 30, 2026, 11:15 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Trial to Investigate Immune Responses Elicited by a Liquid Formulation of Influenza Virus Vaccine(CAIV-T)in Healthy Adults Aged 18 to 59 and Healthy Adults Aged 60 Years and Older

NCT00192153
View directory record Official record
Conditions
Influenza
Interventions
CAIV-T or TIV
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 60 Years
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001
U.S. locations
2
States / cities
New Port Richey, Florida • Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Sep 13, 2021 · Synced Sep 30, 2026, 11:15 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

2017 A/H7N9 IIV Revaccination

NCT03738241
View directory record Official record
Conditions
Avian Influenza, Influenza Immunisation
Interventions
A/H7N9, AS03, Phosphate Buffered Saline (PBS) diluent
Biological · Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
19 Years to 70 Years
Enrollment
304 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
9
States / cities
Atlanta, Georgia • Iowa City, Iowa • Baltimore, Maryland + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 30, 2021 · Synced Sep 30, 2026, 11:15 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Influenza Antiviral DAS181-F03

NCT01173224
View directory record Official record
Conditions
Influenza
Interventions
Placebo, DAS181
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 19, 2013 · Synced Sep 30, 2026, 11:15 AM EDT
Active, not 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
240
States / cities
Anniston, Alabama • Cullman, Alabama • Glendale, Arizona + 109 more
Source: ClinicalTrials.gov public record
Updated Sep 17, 2026 · Synced Sep 30, 2026, 11:15 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Dose Ranging Study to Evaluate Immunogenicity and Safety of Adjuvanted or Non-adjuvanted Cell Culture-derived H5N1 Influenza Vaccine in Young Adults (18-40 Years Old)

NCT00812019
View directory record Official record
Conditions
Influenza
Interventions
Cell Culture-Derived H5N1 Subunit Influenza Vaccine, 3.75_0%MF59, Cell Culture-Derived H5N1 Subunit Influenza Vaccine, 3.75_25%MF59, Cell Culture-Derived H5N1 Subunit Influenza Vaccine, 3.75_50%MF59, Cell Culture-Derived H5N1 Subunit Influenza Vaccine, 3.75_100%MF59, Cell Culture-Derived H5N1 Subunit Influenza Vaccine, 7.5_0%MF59, Cell Culture-Derived H5N1 Subunit Influenza Vaccine, 7.5_25%MF59, Cell Culture-Derived H5N1 Subunit Influenza Vaccine, 7.5_50%MF59, Cell Culture-Derived H5N1 Subunit Influenza Vaccine, 7.5_100%MF59, Cell Culture-Derived H5N1 Subunit Influenza Vaccine, 15_0%MF59, Cell Culture-Derived H5N1 Subunit Influenza Vaccine, 15_25%MF59, Cell Culture-Derived H5N1 Subunit Influenza Vaccine, 15_50%MF59, Cell Culture-Derived H5N1 Subunit Influenza Vaccine, 15_100%MF59
Biological
Lead sponsor
Seqirus
Industry
Eligibility
18 Years to 40 Years
Enrollment
753 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 24, 2020 · Synced Sep 30, 2026, 11:15 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 Sep 30, 2026, 11:15 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Acute Respiratory Infection Consortium

NCT01021098
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
Henry M. Jackson Foundation for the Advancement of Military Medicine
Other
Eligibility
17 Years to 55 Years
Enrollment
2,018 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2023
U.S. locations
5
States / cities
San Diego, California • Bethesda, Maryland • San Antonio, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2023 · Synced Sep 30, 2026, 11:15 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immunogenicity of a Live Attenuated H7N9 Influenza Virus Vaccine in Healthy Adults

NCT01995695
View directory record Official record
Conditions
Influenza A Virus, H7N9 Subtype
Interventions
Live attenuated H7N9 A/Anhui/13 ca influenza virus vaccine, Inactivated subvirion H7N9 influenza vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2013
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jul 27, 2016 · Synced Sep 30, 2026, 11:15 AM 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 Sep 30, 2026, 11:15 AM 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 Sep 30, 2026, 11:15 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Pivotal, Multicenter, Observer-Blind, Randomized Study of Influenza A (H1N1)2009 Monovalent Subunit Vaccine With and Without Adjuvant in Children Ages 6 to <36 Months

NCT00996307
View directory record Official record
Conditions
Influenza
Interventions
MF59-eH1N1_f
Biological
Lead sponsor
Novartis Vaccines
Industry
Eligibility
6 Months to 35 Months
Enrollment
654 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
28
States / cities
Bentonville, Arkansas • Fort Smith, Arkansas • Canoga Park, California + 25 more
Source: ClinicalTrials.gov public record
Updated May 30, 2017 · Synced Sep 30, 2026, 11:15 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

RSV-F Vaccine and Influenza Vaccine Co-Administration Study in the Elderly

NCT01709019
View directory record Official record
Conditions
Respiratory Syncytial Virus (RSV)
Interventions
Low dose RSV-F Vaccine with Adjuvant (Day 0); Seasonal TIV (Day 0 & Day 28), Low dose RSV-F Vaccine without Adjuvant (Day 0); Seasonal TIV (Day 0 & day 28), High dose RSV-F Vaccine with Adjuvant (Day 0); Seasonal TIV (Day 0 & Day 28), High dose RSV-F Vaccine without Adjuvant (Day 0); Seasonal TIV (Day 0 & Day 28), Placebo (Day 0 & Day 28); Seasonal TIV (Day 0)
Biological
Lead sponsor
Novavax
Industry
Eligibility
60 Years and older
Enrollment
220 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
4
States / cities
Tucson, Arizona • Melbourne, Florida • Dallas, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 5, 2014 · Synced Sep 30, 2026, 11:15 AM EDT