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ClinicalTrials.gov public records Last synced Oct 18, 2026, 2:00 AM EDT

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Showing 97–120 of 1,159 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Fluzone Clear all
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Longitudinal Tracking of Bone Marrow Plasma Cell Responses to Licensed Human Vaccines

NCT07493460
View directory record Official record
Conditions
Immunology, Healthy Adults
Interventions
trivalent inactivated influenza vaccine (TIV), nonavalent HPV vaccine (HPV), hepatitis A (HAV) vaccines, tetanus, diphtheria and acellular pertussis vaccine (Tdap)
Biological
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Oct 18, 2026, 2:00 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Clinical Study to Evaluate the Safety, Immunogenicity and Efficacy of Investigational Flu Vaccine Compared to Approved Flu Vaccine in Children.

NCT01964989
View directory record Official record
Conditions
Influenza Virus
Interventions
Adjuvanted Quadrivalent Subunit Influenza Virus Vaccine (aQIV), Non-adjuvanted Trivalent Influenza Vaccine (TIV) / Quadrivalent Influenza Vaccine (QIV)
Biological
Lead sponsor
Seqirus
Industry
Eligibility
6 Months to 71 Months
Enrollment
10,644 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
91
States / cities
Chandler, Arizona • Harrisburg, Arkansas • Anaheim, California + 70 more
Source: ClinicalTrials.gov public record
Updated Mar 27, 2023 · Synced Oct 18, 2026, 2:00 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

H1N1v Virus Challenge Study in Healthy Subjects

NCT04044352
View directory record Official record
Conditions
Influenza
Interventions
Influenza A/Bethesda/MM2/H1N1 Challenge
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
4
States / cities
Baltimore, Maryland • St Louis, Missouri • Durham, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 28, 2021 · Synced Oct 18, 2026, 2:00 AM EDT
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Study to Assess Safety and Immunogenicity of an Egg-based H5N8 Influenza Vaccine at Multiple Dose Levels Adjuvanted With Matrix-M in Healthy Participants 18 Years of Age and Above.

NCT07779408
View directory record Official record
Conditions
Healthy Volunteers, Influenza
Interventions
Flu H5 egg pandemic low dose vaccine, with adjuvant, Flu H5 Egg Pandemic medium dose vaccine, with adjuvant, Flu H5 Egg Pandemic high dose vaccine, with adjuvant, Flu H5 Egg Pandemic high dose vaccine, without adjuvant
Biological
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
640 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
16
States / cities
Tempe, Arizona • Rolling Hills Estates, California • San Diego, California + 12 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2026 · Synced Oct 18, 2026, 2:00 AM EDT
Completed No phase listed Observational

Respiratory Virus Hospitalization Study (FLU 003 Plus)

NCT01056185
View directory record Official record
Conditions
Influenza, Novel Respiratory Virus-1 Middle Eastern Respiratory Syndrome Coronavirus (MERS-CoV), Novel Respiratory Virus-2 Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV)
Interventions
Not listed
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2024
U.S. locations
18
States / cities
San Diego, California • Washington D.C., District of Columbia • Chicago, Illinois + 14 more
Source: ClinicalTrials.gov public record
Updated Oct 21, 2024 · Synced Oct 18, 2026, 2:00 AM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Effects of Ocrelizumab on Immune Responses In Participants With Relapsing Forms of Multiple Sclerosis

NCT02545868
View directory record Official record
Conditions
Multiple Sclerosis, Relapsing-Remitting
Interventions
23-PPV, 13-PCV Booster, Influenza Vaccine, KLH, OCR, TT Vaccine
Biological · Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 55 Years
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
20
States / cities
Cullman, Alabama • Tucson, Arizona • Fullerton, California + 17 more
Source: ClinicalTrials.gov public record
Updated Mar 26, 2024 · Synced Oct 18, 2026, 2:00 AM EDT
Completed No phase listed Observational

Maternal Immunization: Giving Immunity For Tomorrow

NCT01496079
View directory record Official record
Conditions
Pregnancy, Influenza
Interventions
Not listed
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
166 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 14, 2017 · Synced Oct 18, 2026, 2:00 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Immune Responses to the Flu Shot During Pregnancy

NCT02148874
View directory record Official record
Conditions
Pregnancy
Interventions
influenza virus vaccination
Biological
Lead sponsor
Lisa Christian
Other
Eligibility
18 Years to 42 Years · Female only
Enrollment
287 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2019
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 24, 2019 · Synced Oct 18, 2026, 2:00 AM EDT
Completed Phase 2 Interventional Results available

Flu Vaccine Response in Patients on Biologic Therapies

NCT03277703
View directory record Official record
Conditions
Rheumatologic Disorder, Inflammatory Bowel Diseases, Immune Complex Diseases
Interventions
Influenza vaccine
Biological
Lead sponsor
Stony Brook University
Other
Eligibility
3 Years to 22 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
East Setauket, New York
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Oct 18, 2026, 2:00 AM EDT
Completed Phase 4 Interventional Results available

Improving Immunogenicity of Influenza Vaccine in HIV Infected Individuals

NCT01262846
View directory record Official record
Conditions
HIV Infection
Interventions
Fluzone®
Biological
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
195 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 13, 2017 · Synced Oct 18, 2026, 2:00 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 18, 2026, 2:00 AM EDT
Not yet recruiting Phase 4 Interventional Accepts healthy volunteers

How Healthy Adults Respond to the Nasal Flu Vaccine

NCT07726862
View directory record Official record
Conditions
Mucosal Immune Response to Influenza Vaccination
Interventions
FluMist (Live Attenuated Influenza Vaccine)
Biological
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2031
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 18, 2026, 2:00 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Shedding and Safety of Trivalent Influenza Virus Vaccine Live, Intranasal in Infants and Young Children

NCT00344305
View directory record Official record
Conditions
Healthy
Interventions
Trivalent influenza virus vaccine live, intranasal
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
6 Months to 59 Months
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
16
States / cities
Little Rock, Arkansas • Marietta, Georgia • Bardstown, Kentucky + 13 more
Source: ClinicalTrials.gov public record
Updated Jul 24, 2017 · Synced Oct 18, 2026, 2:00 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Adjuvanted Influenza Vaccination Year 2 Follow-On Survey

NCT03599739
View directory record Official record
Conditions
Influenza, Influenza-like Illness, Influenza, Human
Interventions
Influenza
Biological
Lead sponsor
Insight Therapeutics, LLC
Other
Eligibility
65 Years and older
Enrollment
598 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 16, 2023 · Synced Oct 18, 2026, 2:00 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Shedding, Immunogenicity and Safety of Quadrivalent Live Intranasal Influenza Vaccine (QLAIV) in HIV-infected Children and Young Adults

NCT02474901
View directory record Official record
Conditions
Human Immunodeficiency Virus (HIV)
Interventions
Quadrivalent Live Attenuated Influenza Vaccine
Biological
Lead sponsor
University of Colorado, Denver
Other
Eligibility
2 Years to 25 Years
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 20, 2017 · Synced Oct 18, 2026, 2:00 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

B-cell Immunity to Influenza (SLVP017)- Year 1, 2009

NCT02133781
View directory record Official record
Conditions
Influenza
Interventions
Fluzone® 2009-2010 Formula, FluMist® 2009-2010 Formula
Biological
Lead sponsor
Stanford University
Other
Eligibility
8 Years to 100 Years
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jun 6, 2018 · Synced Oct 18, 2026, 2:00 AM EDT
Not listed No phase listed Observational

Severe Acute Respiratory Infection - Preparedness (COVID-19 and Influenza)

NCT04786301
View directory record Official record
Conditions
Pneumonia, Viral
Interventions
Not listed
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older · Female only
Enrollment
1,200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 12, 2021 · Synced Oct 18, 2026, 2:00 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Immune Responses to Fluzone® Vaccination

NCT00743275
View directory record Official record
Conditions
Influenza
Interventions
Split, Inactivated, Trivalent Influenza vaccine (Fluzone®)
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated May 16, 2016 · Synced Oct 18, 2026, 2:00 AM EDT
Completed Phase 2 Interventional Results available

A Study of MHAA4549A as Monotherapy for Acute Uncomplicated Seasonal Influenza A in Otherwise Healthy Adults

NCT02623322
View directory record Official record
Conditions
Influenza A
Interventions
MHAA4549A, Placebo
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
38
States / cities
Athens, Alabama • Costa Mesa, California • Fountain Valley, California + 32 more
Source: ClinicalTrials.gov public record
Updated Jan 8, 2019 · Synced Oct 18, 2026, 2:00 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Clinical Study to Evaluate an Experimental Universal Influenza Vaccine, INFLUENZA G1 mHA, in Healthy Adults

NCT05901636
View directory record Official record
Conditions
Influenza Prevention
Interventions
INFLUENZA G1 mHA, Placebo, Al(OH)3
Biological
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
18 Years to 45 Years
Enrollment
170 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
4
States / cities
Miami Lakes, Florida • Lenexa, Kansas • Metairie, Louisiana + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 8, 2025 · Synced Oct 18, 2026, 2:00 AM EDT
Recruiting Phase 2 Interventional

High vs.Standard Dose Influenza Vaccine in Pediatric Solid Organ Transplant (SOT) Recipients

NCT05947071
View directory record Official record
Conditions
Immunization; Infection, Transplantation Infection, Influenza
Interventions
Standard Dose Quadrivalent Inactivated Influenza Vaccine, High Dose Quadrivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
3 Years to 17 Years
Enrollment
312 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
10
States / cities
Stanford, California • Atlanta, Georgia • Chicago, Illinois + 7 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 18, 2026, 2:00 AM EDT
Completed Phase 3 Interventional Results available

Study to Assess the Safety, Pharmacokinetics, and Efficacy of Baloxavir Marboxil in Healthy Pediatric Participants From Birth to < 1 Year With Influenza-Like Symptoms

NCT03653364
View directory record Official record
Conditions
Influenza
Interventions
Baloxavir Marboxil
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
Up to 1 Year
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
8
States / cities
Jonesboro, Arkansas • Tampa, Florida • Idaho Falls, Idaho + 5 more
Source: ClinicalTrials.gov public record
Updated May 17, 2024 · Synced Oct 18, 2026, 2:00 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

H5N1 Vaccine Intramuscular Versus Intradermal in Healthy Adults

NCT00310206
View directory record Official record
Conditions
Influenza
Interventions
Inactivated Influenza A Vaccine A/H5N1
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 3, 2013 · Synced Oct 18, 2026, 2:00 AM EDT
Active, not recruiting Phase 2 Interventional

High vs. Standard Dose Influenza Vaccine in Adult SOT Recipients

NCT04613206
View directory record Official record
Conditions
Immunization; Infection, Transplantation Infection, Influenza, Solid Organ Transplant
Interventions
High Dose Quadrivalent Inactivated Influenza Vaccine, Standard Dose Quadrivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
396 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 18, 2026, 2:00 AM EDT