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Showing 1–24 of 82 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Fluzone Standard Dose Vaccine Clear all
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
8
States / cities
Stanford, California • Atlanta, Georgia • Chicago, Illinois + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Sep 19, 2026, 8:37 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Study to Evaluate Safety and Immunogenicity of Different Priming and Booster Regimens With Adjuvanted H5N8 and/or H5N6 Influenza Vaccine in Adults

NCT05874713
View directory record Official record
Conditions
Influenza, Human, Infections, Respiratory Tract Infections, Virus Diseases, Infection Viral
Interventions
aH5N8c on Day 1, aH5N6c on Day 1, aH5N8c on Day 22, aH5N6c on Day 22, aH5N8c on Day 202
Biological
Lead sponsor
Seqirus
Industry
Eligibility
18 Years and older
Enrollment
480 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
9
States / cities
Cullman, Alabama • Lilburn, Georgia • Norcross, Georgia + 6 more
Source: ClinicalTrials.gov public record
Updated Dec 12, 2024 · Synced Sep 19, 2026, 8:37 PM EDT
Completed No phase listed Observational

Immunogenicity of Influenza, Pneumococcal and Hepatitis B Vaccines in IBD Patients Treated With Vedolizumab

NCT03056924
View directory record Official record
Conditions
Inflammatory Bowel Diseases
Interventions
Pneumococcal Pneumonia vaccine, Influenza vaccine, Hepatitis B vaccine
Biological
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
173 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 29, 2019 · Synced Sep 19, 2026, 8:37 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Surveillance Study to Assess the Safety of Flublok Quadrivalent (Influenza Vaccine) in Pregnant Women and Their Offspring

NCT04460781
View directory record Official record
Conditions
Influenza
Interventions
Flublok Quadrivalent influenza vaccine RIV4, Standard-dose quadrivalent inactivated influenza vaccine SD-IIV4
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
Up to 64 Years
Enrollment
96,175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated May 23, 2022 · Synced Sep 19, 2026, 8:37 PM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

High-Dose Influenza Vaccine in Nursing Homes

NCT01815268
View directory record Official record
Conditions
Influenza
Interventions
HD Vaccine, SD Vaccine, Free Vaccine, Usual Care
Biological
Lead sponsor
Insight Therapeutics, LLC
Other
Eligibility
65 Years and older
Enrollment
823 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
3
States / cities
Cleveland, Ohio • Providence, Rhode Island • Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 15, 2018 · Synced Sep 19, 2026, 8:37 PM EDT
Completed Phase 4 Interventional Results available

High Dose Influenza Vaccine in Nursing Home - Pilot Study

NCT01720277
View directory record Official record
Conditions
Influenza
Interventions
HD Fluzone Vaccine, SD Fluzone Vaccine
Biological
Lead sponsor
Insight Therapeutics, LLC
Other
Eligibility
65 Years and older
Enrollment
2,957 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
2
States / cities
Providence, Rhode Island • Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated May 22, 2018 · Synced Sep 19, 2026, 8:37 PM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Study on a High-Dose Quadrivalent Influenza Vaccine Compared With Standard-Dose Quadrivalent Influenza Vaccine in Children 6 Months Through 35 Months of Age

NCT04544267
View directory record Official record
Conditions
Influenza
Interventions
Quadrivalent influenza vaccine, high-dose, Quadrivalent influenza vaccine, standard dose
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months to 35 Months
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
10
States / cities
San Diego, California • Miami, Florida • Atlanta, Georgia + 6 more
Source: ClinicalTrials.gov public record
Updated Dec 23, 2025 · Synced Sep 19, 2026, 8:37 PM 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 12, 2017 · Synced Sep 19, 2026, 8:37 PM EDT
Completed Phase 1 Interventional

Standard Dose Versus High-Dose Inactivated Flu Vaccine in Pediatric Solid Organ Transplant Patients

NCT01525004
View directory record Official record
Conditions
Pediatric Solid Organ Transplant Patients
Interventions
High-Dose trivalent inactivated influenza vaccine, Standard dose trivalent inactivated influenza vaccine
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
3 Years to 17 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 15, 2016 · Synced Sep 19, 2026, 8:37 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of Fluzone Vaccine Administered by Intradermal Route in Comparison With Standard Fluzone® in Adults

NCT00772109
View directory record Official record
Conditions
Orthomyxoviridae Infection, Influenza, Myxovirus Infection
Interventions
Influenza Virus Vaccine USP Trivalent Types A and B
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years to 64 Years
Enrollment
4,292 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
46
States / cities
Hoover, Alabama • Huntsville, Alabama • Mobile, Alabama + 40 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2016 · Synced Sep 19, 2026, 8:37 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Immunogenicity and Safety of Different Doses of Fluzone® Influenza

NCT00253734
View directory record Official record
Conditions
Influenza
Interventions
Fluzone® (IM), Fluzone®
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
217 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 2, 2013 · Synced Sep 19, 2026, 8:37 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Study on the Safety and Immunogenicity of Hexavalent Influenza mRNA Vaccine in Adult Participants 50 Years of Age and Older

NCT06744205
View directory record Official record
Conditions
Influenza, Healthy Volunteers
Interventions
Trivalent (TIV) messenger ribonucleic acid (mRNA) hemagglutinin (HA) Vaccine 1, TIV mRNA-neuraminidase (NA), TIV mRNA-HA Vaccine 2, Quadrivalent Influenza Standard Dose Vaccine, Quadrivalent Influenza Vaccine High Dose
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
50 Years and older
Enrollment
1,162 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
21
States / cities
Birmingham, Alabama • Mobile, Alabama • Tempe, Arizona + 18 more
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 19, 2026, 8:37 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of the Sing2016 M2SR H3N2 Monovalent Influenza Vaccine in Adults Ages 50 to 85 Years Old

NCT04785794
View directory record Official record
Conditions
Influenza Vaccine
Interventions
Sing2016 M2SR H3N2 influenza vaccine, Placebo
Biological · Other
Lead sponsor
FluGen Inc
Industry
Eligibility
50 Years to 85 Years
Enrollment
122 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
3
States / cities
Anaheim, California • DeLand, Florida • Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Jun 14, 2023 · Synced Sep 19, 2026, 8:37 PM EDT
Completed Phase 2 Interventional Results available

Study of High-dose Influenza Vaccine Efficacy by Repeated Dosing IN Gammopathy Patients

NCT02566265
View directory record Official record
Conditions
Influenza, Multiple Myeloma, Waldenstrom's Macroglobulinemia, Plasma Cell Disorders, MGUS
Interventions
Fluzone High Dose Vaccine, Standard of care/Placebo
Biological
Lead sponsor
Yale University
Other
Eligibility
18 Years to 90 Years
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 29, 2019 · Synced Sep 19, 2026, 8:37 PM 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 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 20, 2026 · Synced Sep 19, 2026, 8:37 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cell Mediated Immunity in Older Adults

NCT01189123
View directory record Official record
Conditions
Immunity to Influenza Vaccine
Interventions
High dose influenza vaccine Sanofi-Pasteur, fluzone by sanofi pasteur
Biological
Lead sponsor
Vanderbilt University
Other
Eligibility
65 Years and older
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 23, 2014 · Synced Sep 19, 2026, 8:37 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Safety and Immunogenicity of Quadrivalent Influenza mRNA Vaccine MRT5413 in Adult Participants18 Years of Age and Older

NCT05650554
View directory record Official record
Conditions
Influenza Immunization
Interventions
Quadrivalent Influenza mRNA Vaccine MRT5413, Quadrivalent Recombinant Influenza Vaccine, Quadrivalent Influenza Standard Dose Vaccine, Quadrivalent Influenza High-Dose Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
682 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
28
States / cities
Chula Vista, California • Gardena, California • Long Beach, California + 24 more
Source: ClinicalTrials.gov public record
Updated Mar 18, 2025 · Synced Sep 19, 2026, 8:37 PM 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 5, 2026 · Synced Sep 19, 2026, 8:37 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Th1 Response to Influenza: Aging and Vaccine Efficacy

NCT00396305
View directory record Official record
Conditions
Influenza
Interventions
Placebo, Trivalent Inactivated Influenza
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
21 Years and older
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 26, 2010 · Synced Sep 19, 2026, 8:37 PM EDT
Completed Phase 4 Interventional Results available

VAccination to Improve Clinical outComes in Heart Failure Trial: a Feasibility Study (VACC-HeFT)

NCT02268500
View directory record Official record
Conditions
Chronic Heart Failure
Interventions
Influenza vaccine
Biological
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 8, 2021 · Synced Sep 19, 2026, 8:37 PM EDT
Completed Phase 4 Interventional

Randomized Influenza Vaccine Evaluation of Immune Response

NCT03598439
View directory record Official record
Conditions
Influenza
Interventions
Standard IIV4, Recombinant, Cell-culture
Biological
Lead sponsor
Marshfield Clinic Research Foundation
Other
Eligibility
18 Years to 64 Years
Enrollment
366 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Marshfield, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 20, 2025 · Synced Sep 19, 2026, 8:37 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effects of Tobacco Products on Live Attenuated Influenza Virus (LAIV) Infections in Human Volunteers

NCT02019745
View directory record Official record
Conditions
Influenza, Human, Smoking, Respiratory Tract Infections, Habits
Interventions
LAIV
Biological
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 45 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 3, 2018 · Synced Sep 19, 2026, 8:37 PM EDT
Completed Phase 4 Interventional Results available

Standard-dose Versus High-dose Flu Vaccine in Solid Organ Transplant.

NCT01808456
View directory record Official record
Conditions
Influenza, Human, Transplantation Infection
Interventions
influenza trivalent inactive vaccine, influenza trivalent inactive vaccine high dose
Biological
Lead sponsor
Inova Health Care Services
Other
Eligibility
18 Years to 70 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Falls Church, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 21, 2022 · Synced Sep 19, 2026, 8:37 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Safety Study of Seasonal Influenza Vaccine by Jet Injection

NCT00987350
View directory record Official record
Conditions
Healthy Adults
Interventions
LectraJet, TIV by jet injection, Seasonal Trivalent Influenza Vaccine
Device · Biological
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 49 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
College Park, Maryland
Source: ClinicalTrials.gov public record
Updated May 2, 2021 · Synced Sep 19, 2026, 8:37 PM EDT