Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 5, 2026, 6:19 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 53 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Fluzone High Dose Inactivated Influenza Vaccine Clear all
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 11, 2017 · Synced Oct 5, 2026, 6:19 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Study of a Combination Vaccine Comprised of Different Recombinant Spike Antigen Levels of a Matrix-M Adjuvanted Recombinant COVID-19 Vaccine and High-Dose Inactivated Influenza Vaccine in Adult Participants 50 Years of Age and Older

NCT06695117
View directory record Official record
Conditions
COVID-19 Immunization, Influenza Immunization
Interventions
IIV-HD, rC19 (dose 1), IIV-HD + rC19 (dose 1), IIV-HD + rC19 (dose 2), IIV-HD + rC19 (dose 3), IIV-HD + rC19 (dose 4), Placebo (0.9% NaCl)
Biological · Other
Lead sponsor
Sanofi
Industry
Eligibility
50 Years and older
Enrollment
980 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
12
States / cities
Birmingham, Alabama • Huntsville, Alabama • Tucson, Arizona + 9 more
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Oct 5, 2026, 6:19 PM 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 Oct 5, 2026, 6:19 PM EDT
Withdrawn Phase 2 Interventional

High Dose Influenza in Immunosuppressed Subjects

NCT00766285
View directory record Official record
Conditions
Influenza
Interventions
Trivalent inactivated influenza vaccine, Trivalent Baculovirus-expressed Influenza HA vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2010
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 3, 2015 · Synced Oct 5, 2026, 6:19 PM EDT
Terminated Phase 2 Interventional Results available

Lenalidomide as Immune Adjuvant in Patient's With Chronic Lymphocytic Leukemia (CLL)

NCT01924169
View directory record Official record
Conditions
Hematologic Disorder
Interventions
Lenalidomide, Influenza Vaccine, Pneumovax Vaccine
Drug · Biological
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 20, 2018 · Synced Oct 5, 2026, 6:19 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study of High-Dose Trivalent Inactivated Influenza Vaccine in Adults 50 to 64 Years of Age

NCT01258595
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
50 Years to 64 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
5
States / cities
Idaho Falls, Idaho • Columbia, Maryland • Ellicott City, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated May 16, 2016 · Synced Oct 5, 2026, 6:19 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 22, 2022 · Synced Oct 5, 2026, 6:19 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 16, 2024 · Synced Oct 5, 2026, 6:19 PM EDT
Completed Phase 2 Interventional Results available

Immunogenicity of Fluzone High Dose in Immunocompromised Children and Young Adults

NCT01685372
View directory record Official record
Conditions
Solid Organ Transplant Recipient (Liver, Kidney, Heart), Rheumatologic Disorder, Human Immunodeficiency Virus (HIV), Bone Marrow Transplant (BMT), Dialysis
Interventions
Fluzone High Dose, Fluzone
Biological
Lead sponsor
University of Colorado, Denver
Other
Eligibility
5 Years to 35 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 23, 2018 · Synced Oct 5, 2026, 6:19 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 16, 2016 · Synced Oct 5, 2026, 6:19 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 10, 2021 · Synced Oct 5, 2026, 6:19 PM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

B Cell and Antibody Response to Seasonal Influenza Vaccines in Younger and Older Adults

NCT04101838
View directory record Official record
Conditions
Influenza
Interventions
Fluzone, Flucelvax, Fluzone High-Dose, Fluad
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 80 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Oct 5, 2026, 6:19 PM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers

Safety and Immunogenicity of Chimeric Hemagglutinin mRNA Vaccine Candidates

NCT07703514
View directory record Official record
Conditions
Influenza
Interventions
cH15/3, cH4/3, cH5/1N1, cH8/1N1, Saline
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 59 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 25, 2026 · Synced Oct 5, 2026, 6:19 PM EDT
Recruiting Phase 2 Interventional

High vs. Standard Dose Influenza Vaccines in Lung Transplant (Repeater)

NCT07192458
View directory record Official record
Conditions
Immunization; Infection|Transplantation Infection|Influenza, Influenza
Interventions
Fluzone High Dose Inactivated Influenza Vaccine, Fluzone Standard Dose Inactivated Influenza Vaccine
Biological
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 7, 2025 · Synced Oct 5, 2026, 6:19 PM EDT
Completed Phase 1 Interventional Results available

Standard vs High-Dose Trivalent Inactivated Flu Vaccine in Adult Hematopoetic Stem Cell Transplant (HSCT) Recipients

NCT01215734
View directory record Official record
Conditions
Adult Stem Cell Hematopoetic Transplant
Interventions
High-Dose Trivalent Inactivated Influenza Vaccine (HD-TIV), Standard Dose Trivalent Inactivated Flu Vaccine
Biological
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 8, 2013 · Synced Oct 5, 2026, 6:19 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Different Formulations of an MF59-Adjuvanted Influenza Vaccine in Older Adults ≥50 Years of Age

NCT05501561
View directory record Official record
Conditions
Influenza, Human
Interventions
Experimental: IIV-A Investigational IIV-A administered as a single dose intramuscularly on Day 1, Experimental: aIIV-B Investigational aIIV-B administered as a single dose intramuscularly on Day 1, Experimental: aIIV-C Investigational aIIV-C administered as a single dose intramuscularly on Day 1, Active Comparator: Licensed IIV IIV administered as a single dose intramuscularly on Day 1
Biological
Lead sponsor
Seqirus
Industry
Eligibility
50 Years and older
Enrollment
1,056 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
47
States / cities
Tempe, Arizona • Huntington Beach, California • San Diego, California + 42 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Oct 5, 2026, 6:19 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Eldery High Dose TIV 2005

NCT00115531
View directory record Official record
Conditions
Influenza
Interventions
Trivalent inactivated influenza vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
65 Years and older
Enrollment
414 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
5
States / cities
Iowa City, Iowa • Baltimore, Maryland • St Louis, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2014 · Synced Oct 5, 2026, 6:19 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Study of a Quadrivalent High-Dose Influenza Vaccine and a Moderna COVID-19 Vaccine Administered Either Concomitantly or Singly in Participants 65 Years of Age and Older Previously Vaccinated With a 2-dose Schedule of Moderna COVID-19 Vaccine

NCT04969276
View directory record Official record
Conditions
Influenza Immunization, Healthy Volunteers
Interventions
Quadrivalent Inactivated Influenza High Dose, COVID-19 mRNA Vaccine (nucleoside modified)
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
65 Years and older
Enrollment
306 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
6
States / cities
Glendale, Arizona • San Diego, California • Vista, California + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 12, 2025 · Synced Oct 5, 2026, 6:19 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Immunogenicity of High-dose Inactivated, Split-virion Influenza Vaccine Versus Standard Fluzone Vaccine in the Elderly

NCT00391053
View directory record Official record
Conditions
Orthomyxoviridae Infection, Influenza, Myxovirus Infection
Interventions
High-Dose Inactivated, Split-Virion Influenza Vaccine, Inactivated, Split-Virion Influenza Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
65 Years and older
Enrollment
3,851 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
28
States / cities
Mesa, Arizona • Phoenix, Arizona • Tempe, Arizona + 25 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced Oct 5, 2026, 6:19 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

First-in-Human Clinical Trial of a Mosaic Quadrivalent Influenza Vaccine Compared With a Licensed Inactivated Seasonal QIV in Healthy Adults

NCT04896086
View directory record Official record
Conditions
Influenza, Seasonal Influenza
Interventions
VRC-GENADJ0110-AP-NV (Adjuplex), Flucelvax, VRC-FLUMOS0111-00-VP (FluMos-v1)
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 27, 2025 · Synced Oct 5, 2026, 6:19 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 5, 2026, 6:19 PM EDT
Completed Not applicable Interventional

Seasonal Influenza Vaccine High Dose Boosting in Solid Organ Transplant Recipients

NCT05663463
View directory record Official record
Conditions
Solid Organ Transplant
Interventions
Fluzone High-Dose - 2 doses, Fluzone High-Dose - 1 dose of HD
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 15, 2025 · Synced Oct 5, 2026, 6:19 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

A Study of the Safety and Immunogenicity of High-Dose Quadrivalent Influenza Vaccine in Subjects Aged 65 Years and Older

NCT02553343
View directory record Official record
Conditions
Influenza
Interventions
High-dose quadrivalent influenza virus vaccine, High-dose influenza virus vaccine, High-dose trivalent inactivated influenza vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
65 Years and older
Enrollment
792 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
9
States / cities
Milford, Connecticut • Coral Gables, Florida • Wichita, Kansas + 6 more
Source: ClinicalTrials.gov public record
Updated Feb 9, 2018 · Synced Oct 5, 2026, 6:19 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Randomized Trial of High Dose Influenza Vaccine in Long Term Care Setting

NCT01654224
View directory record Official record
Conditions
Influenza
Interventions
High Dose Inactivated Influenza Vaccine, Standard Dose Inactivated Influenza Vaccine
Biological
Lead sponsor
University of Pittsburgh
Other
Eligibility
65 Years and older
Enrollment
205 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 5, 2026, 6:19 PM EDT