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ClinicalTrials.gov public records Last synced Oct 7, 2026, 7:29 AM EDT

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Showing 97–120 of 616 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Influenza Vaccine 1 Clear all
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 7, 2026, 7:29 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Efficacy of MEDI7510 in Older Adults

NCT02508194
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
MEDI7510, IIV, Placebo
Biological · Other
Lead sponsor
MedImmune LLC
Industry
Eligibility
60 Years to 99 Years
Enrollment
1,900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
30
States / cities
Sacramento, California • San Francisco, California • Aurora, Colorado + 27 more
Source: ClinicalTrials.gov public record
Updated Dec 26, 2017 · Synced Oct 7, 2026, 7:29 AM EDT
Completed No phase listed Observational

Influenza Vaccine in Premature Infants

NCT00455169
View directory record Official record
Conditions
Influenza, Infant, Premature
Interventions
Trivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
University of Rochester
Other
Eligibility
6 Months to 17 Months
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
5
States / cities
Miami, Florida • Buffalo, New York • Rochester, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 17, 2015 · Synced Oct 7, 2026, 7:29 AM EDT
Terminated Phase 3 Interventional Results available

A Study to Evaluate the Efficacy and Safety of Pimodivir in Combination With the Standard-of-Care Treatment in Adolescent, Adult, and Elderly Non-Hospitalized Participants With Influenza A Infection Who Are at Risk of Developing Complications

NCT03381196
View directory record Official record
Conditions
Influenza A
Interventions
Pimodivir 600 mg, Placebo, SOC Treatment
Drug · Other
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
13 Years to 85 Years
Enrollment
553 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
140
States / cities
Birmingham, Alabama • Scottsboro, Alabama • California City, California + 105 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2025 · Synced Oct 7, 2026, 7:29 AM 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 19, 2025 · Synced Oct 7, 2026, 7:29 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Systems Biology of Influenza A (H5N1) Virus Monovalent Vaccine With and Without Adjuvant System 03 (AS03)

NCT01910519
View directory record Official record
Conditions
Influenza A Virus, H5N1 Subtype
Interventions
H5N1 vaccine plus AS03 adjuvant, H5N1 vaccine without adjuvant
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
21 Years to 45 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 12, 2019 · Synced Oct 7, 2026, 7:29 AM 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 7, 2026, 7:29 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

H7N9 Vaccination With and Without AS03 and Unadjuvanted H3N2v Vaccination: Standard and Systems Biology Analyses

NCT02921997
View directory record Official record
Conditions
Avian Influenza, H1N1 Influenza, Influenza
Interventions
AS03, Influenza Virus Vaccine, Monovalent A/H3N2v A/Minnesota/11/2010 NYMC X-203, Monovalent influenza A/H7N9 virus vaccine
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 9, 2024 · Synced Oct 7, 2026, 7:29 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Efficacy of Immunization With 4C-MenB in Preventing Experimental Urethral Infection With Neisseria Gonorrhoeae

NCT05294588
View directory record Official record
Conditions
Gonorrhea Male
Interventions
Cefixime, Ceftriaxone, Ciprofloxacin, Neisseria gonorrhoeae strain FA1090, Meningococcal Group B Vaccine, Influenza Vaccine, Tetanus-diptheria Vaccine
Drug · Biological
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 35 Years · Male only
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 2, 2026 · Synced Oct 7, 2026, 7:29 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

FLU-VACS Comparative Study in Adults

NCT00133523
View directory record Official record
Conditions
Influenza
Interventions
Cold-adapted live attenuated influenza virus vaccine, trivalent, Placebo, Trivalent inactivated influenza vaccine
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
2,349 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
6
States / cities
Ann Arbor, Michigan • Kalamazoo, Michigan • Livonia, Michigan + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 5, 2014 · Synced Oct 7, 2026, 7:29 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Immunogenicity of a H7N9 Vaccine for the Prevention of Influenza H7N9 Disease in Adults 50 to 70 Years Old

NCT02274545
View directory record Official record
Conditions
Influenza A Virus, H7N9 Subtype
Interventions
H7N9 Anhui 2013/AA ca, Inactivated subvirion H7N9 vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
50 Years to 70 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2014
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Apr 19, 2017 · Synced Oct 7, 2026, 7:29 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Surveillance Program to Determine Product Specific Rates of Invasive Hib Disease

NCT00855855
View directory record Official record
Conditions
Haemophilus Infections, Diphtheria, Tetanus, Polio, Pertussis
Interventions
DTaP-IPV/Hib
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
Up to 59 Months
Enrollment
20,830 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2014
U.S. locations
59
States / cities
Albany, California • Martinez, California • San Francisco, California + 56 more
Source: ClinicalTrials.gov public record
Updated Apr 25, 2022 · Synced Oct 7, 2026, 7:29 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Clinical Study to Assess the Safety of a New Influenza Vaccine

NCT01104493
View directory record Official record
Conditions
Healthy
Interventions
Monovalent Frozen FluMist®, Placebo
Biological · Other
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 49 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
3
States / cities
South Miami, Florida • Stockbridge, Georgia • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jul 18, 2011 · Synced Oct 7, 2026, 7:29 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Bacterial Composition and Immune Responses in the Nose and Oropharynx During Influenza Infection

NCT02597647
View directory record Official record
Conditions
Influenza
Interventions
LAIV, Saline
Biological · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 64 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Oct 7, 2026, 7:29 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Intradermal Influenza Vaccination

NCT06067555
View directory record Official record
Conditions
Vaccine Reaction
Interventions
MicronJet, Fluzone® Quadrivalent, Bacteriostatic Saline
Device · Biological · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 40 Years
Enrollment
249 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 19, 2025 · Synced Oct 7, 2026, 7:29 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Evaluation of Antibody Response to High-Dose Seasonal Influenza Vaccination in Patients With Myeloid Malignancy Receiving Chemotherapy and Healthy Volunteers

NCT04484532
View directory record Official record
Conditions
Acute Myeloid Leukemia, Myelodysplastic Syndrome
Interventions
Trivalent Influenza Vaccine
Biological
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
40 Years and older
Enrollment
130 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jun 6, 2023 · Synced Oct 7, 2026, 7:29 AM 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 22, 2023 · Synced Oct 7, 2026, 7:29 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

A Clinical Study to Evaluate the Efficacy, Safety and Immunogenicity of an Adjuvanted Influenza Vaccine Compared to a Non-adjuvanted Influenza Vaccine in Adults ≥65 Years of Age

NCT06087640
View directory record Official record
Conditions
Influenza, Human
Interventions
aQIV or aTIV, QIV or TIV
Biological
Lead sponsor
Seqirus
Industry
Eligibility
65 Years and older
Enrollment
38,769 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
111
States / cities
Birmingham, Alabama • Cullman, Alabama • Phoenix, Arizona + 96 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Oct 7, 2026, 7:29 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Fluzone® Quadrivalent, Flublok® Quadrivalent, and Fluzone® High-Dose, Influenza Vaccines, 2018-2019 Formulations

NCT03617523
View directory record Official record
Conditions
Influenza
Interventions
Fluzone Quadrivalent vaccine, 2018-2019 formulation, Flublok Quadrivalent vaccine, 2018-2019 formulation, Fluzone High-Dose vaccine, 2018-2019 formulation
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months and older
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
3
States / cities
Bardstown, Kentucky • Metairie, Louisiana • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 29, 2022 · Synced Oct 7, 2026, 7:29 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 Oct 7, 2026, 7:29 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Efficacy and Safety of CR6261 in an H1N1 Influenza Healthy Volunteer Human Challenge Model

NCT02371668
View directory record Official record
Conditions
H1N1 Influenza Healthy Volunteers
Interventions
CR6261, Placebo
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 17, 2020 · Synced Oct 7, 2026, 7:29 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Open-Label Study of H5 Vaccine in Participants of Protocol 04-077

NCT00402649
View directory record Official record
Conditions
Influenza
Interventions
Inactivated Influenza A/H5N1 Vaccine (sanofi pasteur)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
2 Years to 10 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
3
States / cities
Torrance, California • Baltimore, Maryland • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 13, 2011 · Synced Oct 7, 2026, 7:29 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety of Simultaneous mRNA COVID-19 Vaccine With Other Childhood Vaccines in Young Children

NCT06038617
View directory record Official record
Conditions
Fever After Vaccination, Fever, Seizures Fever
Interventions
mRNA COVID-19 Vaccine, Routine Childhood Vaccinations
Biological
Lead sponsor
Duke University
Other
Eligibility
6 Months to 4 Years
Enrollment
347 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
5
States / cities
Oakland, California • Atlanta, Georgia • New York, New York + 2 more
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Oct 7, 2026, 7:29 AM 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 7, 2026, 7:29 AM EDT