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Showing 1–24 of 154 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Fluzone High Dose Clear all
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 4, 2014 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Different Dosages of High-Dose Quadrivalent Influenza Vaccine in Children 6 Months to 17 Years of Age

NCT03698279
View directory record Official record
Conditions
Influenza
Interventions
High-Dose Quadrivalent Influenza Vaccine (QIV-HD) 30 μg (split-virion, inactivated), High-Dose Quadrivalent Influenza Vaccine (QIV-HD) 45 μg, (split-virion, inactivated), High-Dose Quadrivalent Influenza Vaccine (QIV-HD) 60 µg (split-virion, inactivated), Fluarix Quadrivalent Influenza vaccine (Unadjuvanted QIV-SD) (Inactivated), FLUAD Pediatric (adjuvanted TIV) (Surface Antigen, Inactivated)
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months to 17 Years
Enrollment
665 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
13
States / cities
San Diego, California • Miami, Florida • Atlanta, Georgia + 8 more
Source: ClinicalTrials.gov public record
Updated Apr 3, 2022 · Synced Sep 5, 2026, 9:51 PM EDT
Recruiting Phase 2 Interventional

Reduced Intensity Haploidentical BMT for High Risk Solid Tumors

NCT01804634
View directory record Official record
Conditions
Refractory and/or Relapsed Metastatic Solid Tumors
Interventions
Cyclophosphamide, Fludarabine, low dose total body irradiation, Melphalan, Tacrolimus
Drug · Radiation
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
1 Year to 50 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2030
U.S. locations
3
States / cities
Baltimore, Maryland • The Bronx, New York • Valhalla, New York
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of Ad26.COV2.S and Influenza Vaccines in Healthy Adults

NCT05091307
View directory record Official record
Conditions
COVID-19 Prevention
Interventions
Ad26.COV2.S, Placebo, Influenza Vaccine
Biological · Other
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
18 Years and older
Enrollment
861 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
17
States / cities
Tempe, Arizona • San Diego, California • Coral Gables, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated May 24, 2025 · Synced Sep 5, 2026, 9:51 PM EDT
Terminated Phase 2 Interventional Results available

Reduced-intensity, Related-donor Bone Marrow Transplantation Followed by High-dose Cyclophosphamide for Hematologic Cancers

NCT01135329
View directory record Official record
Conditions
Lymphoma, Leukemia, Myelodysplastic Syndrome
Interventions
Fludarabine, Busulfan, Cyclophosphamide, Mycophenolate Mofetil, Tacrolimus
Drug
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
6 Months to 75 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Evaluate the Safety and Immunogenicity of KBP-V001 Quadrivalent Influenza Vaccine in Healthy Adults

NCT04439695
View directory record Official record
Conditions
Influenza
Interventions
Low dose, Intermediate dose, High dose, Placebo
Biological
Lead sponsor
KBio Inc
Industry
Eligibility
18 Years to 49 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 15, 2021 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 1 Interventional

High-Dose Trivalent Influenza Vaccine in Inducing Immune Response Patients With Central Nervous System Tumors

NCT01941758
View directory record Official record
Conditions
Central Nervous System Neoplasm
Interventions
trivalent influenza vaccine, laboratory biomarker analysis
Biological · Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
2
States / cities
Baltimore, Maryland • Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 4, 2018 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Aging on Primary and Secondary Vaccine Responses

NCT03312699
View directory record Official record
Conditions
Influenza, Hepatitis A, Typhoid, Healthy Adults
Interventions
Fluzone® quadrivalent, Fluzone High Dose, Fluad, Vaqta, Typhim Vi, Vivotif
Biological
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 15, 2024 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Comparison of Immune Responses to Influenza Vaccine In Adults of Different Ages (SLVP015 2007-2017)

NCT01827462
View directory record Official record
Conditions
Influenza
Interventions
Trivalent, inactivated influenza vaccine (TIV), Quadrivalent, inactivated influenza vaccine (IIV4), High-Dose Trivalent, inactivated influenza vaccine (TIV High-Dose)
Biological
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 100 Years
Enrollment
136 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2017
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jul 10, 2017 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of 9-valent Extraintestinal Pathogenic Escherichia Coli Vaccine (ExPEC9V) and High-dose Quadrivalent Influenza Vaccine, With and Without Co-administration, in Adults Aged 65 Years or Older

NCT06134804
View directory record Official record
Conditions
Invasive Extraintestinal Pathogenic Escherichia Coli Disease (IED) Prevention
Interventions
ExPEC9V, Placebo, HD quadrivalent influenza vaccine
Biological
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
65 Years and older
Enrollment
959 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
24
States / cities
Huntsville, Alabama • Mobile, Alabama • San Diego, California + 19 more
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Investigate the Safety and Immunogenicity of the Quadrivalent Influenza mRNA Vaccines in Adults Aged 18 Years and Above

NCT06361875
View directory record Official record
Conditions
Influenza Immunization, Healthy Volunteers
Interventions
Quadrivalent Influenza mRNA Vaccine MRT5421, Quadrivalent Influenza mRNA Vaccine MRT5424, Quadrivalent Influenza mRNA Vaccine MRT5429, Quadrivalent Influenza Standard Dose Vaccine, Quadrivalent Influenza High-Dose Vaccine, Quadrivalent Recombinant Influenza Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
908 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
11
States / cities
San Diego, California • Hialeah, Florida • Hollywood, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Aug 3, 2026 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Study of Fluzone® High-Dose Vaccine Compared With Fluzone® Vaccine In Elderly Adults

NCT01427309
View directory record Official record
Conditions
Influenza
Interventions
High Dose Trivalent Inactivated Influenza Vaccine, Trivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
65 Years and older
Enrollment
31,989 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
105
States / cities
Mobile, Alabama • Chandler, Arizona • Glendale, Arizona + 88 more
Source: ClinicalTrials.gov public record
Updated Apr 19, 2015 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A/H5N1/LT Dose Ranging Study

NCT00908687
View directory record Official record
Conditions
Pandemic Influenza
Interventions
A/H5N1, LT Adjuvant Patch
Biological
Lead sponsor
Intercell USA, Inc.
Industry
Eligibility
18 Years to 49 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
6
States / cities
Anaheim, California • Vallejo, California • Miami, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 9, 2021 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Annual Study for Collection of Serum Samples in Children and Older Adults Receiving the 2020-2021 Formulations of Fluzone Quadrivalent Vaccine and Fluzone High-Dose Quadrivalent Vaccine, Respectively

NCT04551677
View directory record Official record
Conditions
Influenza Immunization, Healthy Volunteers
Interventions
Fluzone Quadrivalent vaccine, No Preservative (0.5-mL dose), 2020-2021 formulation, Fluzone High-Dose Quadrivalent vaccine (0.7-mL dose), 2020-2021 formulation
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months to 84 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
2
States / cities
Bardstown, Kentucky • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Duration of Immune Response to Influenza Vaccination in Patients With RA

NCT02311855
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Influenza vaccine
Biological
Lead sponsor
Bassett Healthcare
Other
Eligibility
40 Years to 75 Years
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Cooperstown, New York
Source: ClinicalTrials.gov public record
Updated Jan 5, 2017 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Entolimod on Immunosenescence in Healthy Geriatric Subjects Receiving Influenza Vaccination

NCT04176133
View directory record Official record
Conditions
Healthy
Interventions
Entolimod, Placebo, Influenza vaccine
Drug
Lead sponsor
Robert J. Pignolo
Other
Eligibility
65 Years and older
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 21, 2023 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 3 Interventional Results available

A Study of an Ad26.RSV.preF-based Vaccine and High-dose Seasonal Influenza Vaccine, With and Without Coadministration, in Adults Aged 65 Years and Older

NCT05071313
View directory record Official record
Conditions
Influenza, Human Prevention, Respiratory Syncytial Viruses Prevention
Interventions
Ad26.RSV.preF-based vaccine, Quadrivalent High-dose Influenza Vaccine, Placebo
Biological
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
65 Years and older
Enrollment
777 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
19
States / cities
Long Beach, California • Hollywood, Florida • Port Orange, Florida + 14 more
Source: ClinicalTrials.gov public record
Updated May 24, 2025 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Study to Learn About How the Flu and COVID-19 Vaccines Act in Healthy People

NCT06821061
View directory record Official record
Conditions
Influenza, COVID-19 (Coronavirus Disease 2019)
Interventions
Investigational Influenza Vaccine, Investigational COVID-19 Vaccine, Investigational Influenza and COVID-19 Combination Vaccine, Licensed Influenza Vaccine 1, Licensed Influenza Vaccine 2, Licensed Influenza Vaccine 3, Licensed COVID-19 Vaccine
Biological · Combination Product
Lead sponsor
BioNTech SE
Industry
Eligibility
18 Years and older
Enrollment
2,650 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
31
States / cities
Anaheim, California • Lake Forest, California • Riverside, California + 26 more
Source: ClinicalTrials.gov public record
Updated Jan 25, 2026 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 1 Interventional

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

NCT02267733
View directory record Official record
Conditions
Influenza, Gammopathy
Interventions
Fluzone
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 24, 2016 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 2 Interventional Results available

Study of an Investigational Monoclonal Antibody, VIS410, in Subjects With Uncomplicated Influenza A

NCT02989194
View directory record Official record
Conditions
Influenza
Interventions
VIS410 low dose, VIS410 high dose, Placebo
Drug
Lead sponsor
Visterra, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
11
States / cities
Huntsville, Alabama • Coral Gables, Florida • Homestead, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Aug 14, 2022 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Safety and Immunogenicity of a Single Dose of H1ssF-3928 mRNA-LNP in Healthy Adults

NCT05755620
View directory record Official record
Conditions
Influenza
Interventions
Influenza Virus Quadrivalent Inactivated Vaccine, Sodium Chloride, 0.9%, VRC-FLUNPF099-00-VP (H1ssF_3928)
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 17, 2026 · Synced Sep 5, 2026, 9:51 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

H5N1 (Clade 2) Vaccination of Adults and Elderly

NCT00680069
View directory record Official record
Conditions
Influenza
Interventions
Influenza Virus Vaccine, Monovalent A/H5N1 A/Indonesia/05/2005
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
19 Years to 99 Years
Enrollment
517 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
8
States / cities
Stanford, California • Iowa City, Iowa • Baltimore, Maryland + 5 more
Source: ClinicalTrials.gov public record
Updated Dec 29, 2016 · Synced Sep 5, 2026, 9:51 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 5, 2026, 9:51 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Two Doses of H5N1 Influenza Vaccine in Children

NCT01776554
View directory record Official record
Conditions
Pandemic H5N1 Influenza
Interventions
Adjuvanted H5N1 pandemic influenza vaccine
Biological
Lead sponsor
Novartis Vaccines
Industry
Eligibility
6 Months to 17 Years
Enrollment
662 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
10
States / cities
Miami, Florida • Newton, Kansas • Wichita, Kansas + 6 more
Source: ClinicalTrials.gov public record
Updated Jan 15, 2019 · Synced Sep 5, 2026, 9:51 PM EDT