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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Flu Vaccination Clear all
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Immune Response of mRNA-1345, a Vaccine Targeting Respiratory Syncytial Virus (RSV), When Co-administered With a Fluzone HD, in Adults ≥65 Years of Age

NCT06060457
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
Placebo, mRNA-1345, Fluzone HD
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
65 Years and older
Enrollment
1,900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
34
States / cities
Scottsdale, Arizona • Dublin, California • Riverside, California + 29 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2025 · Synced Jul 22, 2026, 3:33 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Effect of Influenza Vaccination on Donor Egg Recipient Outcomes

NCT02946177
View directory record Official record
Conditions
Infertility, Recurrent Miscarriage
Interventions
Influenza Vaccine, Sterile Saline
Biological · Other
Lead sponsor
Center for Human Reproduction
Other
Eligibility
21 Years to 45 Years · Female only
Enrollment
126 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 17, 2020 · Synced Jul 22, 2026, 3:33 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of PanBlok Influenza Vaccine in Healthy Adults

NCT01612000
View directory record Official record
Conditions
Influenza
Interventions
PanBlok, rHA adjuvant
Biological
Lead sponsor
Protein Sciences Corporation
Industry
Eligibility
18 Years to 49 Years
Enrollment
341 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
5
States / cities
Omaha, Nebraska • Rochester, New York • Austin, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2015 · Synced Jul 22, 2026, 3:33 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

2013/2017 H7N9 Prime-Boost Interval

NCT03589807
View directory record Official record
Conditions
Avian Influenza, Influenza Immunisation
Interventions
A/H7N9, AS03, Influenza Virus Vaccine, Monovalent A/H7N9 A/Shanghai/2/2013, Phosphate Buffered Saline (PBS) diluent
Biological · Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
19 Years to 50 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
6
States / cities
Atlanta, Georgia • Decatur, Georgia • Iowa City, Iowa + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 1, 2021 · Synced Jul 22, 2026, 3:33 AM EDT
Completed Phase 4 Interventional Results available

A Multicenter Study to Assess Response to Influenza Vaccine in Multiple Sclerosis Participants Treated With Ofatumumab

NCT04667117
View directory record Official record
Conditions
Relapsing Multiple Sclerosis
Interventions
Quadrivalent influenza vaccine, Ofatumumab, iDMT
Biological · Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 55 Years
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
3
States / cities
Phoenix, Arizona • Hollywood, Florida • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 8, 2024 · Synced Jul 22, 2026, 3:33 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 4, 2014 · Synced Jul 22, 2026, 3:33 AM EDT
Completed Phase 2 Interventional Results available

H1N1 Vaccine at Two Dose Levels in HIV Positive Adults

NCT00992433
View directory record Official record
Conditions
Influenza
Interventions
Inactivated Influenza H1N1 vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
6
States / cities
Iowa City, Iowa • Baltimore, Maryland • St Louis, Missouri + 3 more
Source: ClinicalTrials.gov public record
Updated May 15, 2012 · Synced Jul 22, 2026, 3:33 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of Free Air Portable Air Powered Respirator

NCT02487147
View directory record Official record
Conditions
Influenza
Interventions
Free Air Portable Air Powered Respirator, N95 Respirator
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 49 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 3, 2022 · Synced Jul 22, 2026, 3:33 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

H5N1 Mix and Match With AS03

NCT01317758
View directory record Official record
Conditions
Influenza
Interventions
AS03 Adjuvant, Phosphate Buffered Saline (PBS) diluent, Sanofi H5N1 Antigen
Drug · Other · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
245 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
4
States / cities
Baltimore, Maryland • Nashville, Tennessee • Houston, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 17, 2013 · Synced Jul 22, 2026, 3:33 AM 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 Jul 22, 2026, 3:33 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Immunogenicity of Quadrivalent LAIV in Adults 18 to 49 Years of Age

NCT00860067
View directory record Official record
Conditions
Healthy or Stable Underlying Chronic Medical Condition
Interventions
Q/LAIV (MEDI3250), FluMist/B/Yamagata, FluMist/B/Victoria
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 49 Years
Enrollment
1,800 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
18
States / cities
Sacramento, California • San Diego, California • San Francisco, California + 15 more
Source: ClinicalTrials.gov public record
Updated Dec 4, 2011 · Synced Jul 22, 2026, 3:33 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Building Engagement Using Financial Incentives Trial - Colorectal Cancer Screening

NCT06124131
View directory record Official record
Conditions
Health Behavior, Colorectal Cancer, Influenza, COVID-19, Vaccine Hesitancy, Vaccine-Preventable Diseases, Healthcare Patient Acceptance
Interventions
Financial incentive for colorectal cancer screening, Financial incentive for flu shot, Financial incentive for COVID-19 shot
Behavioral
Lead sponsor
Tulane University
Other
Eligibility
45 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated May 3, 2025 · Synced Jul 22, 2026, 3:33 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Recombinant Influenza Vaccination in U.S. Nursing Homes

NCT03965195
View directory record Official record
Conditions
Influenza, Influenza -Like Illness, Influenza, Human
Interventions
Recombinant Influenza Vaccine, Standard Dose Quadrivalent Influenza Vaccine
Biological
Lead sponsor
Insight Therapeutics, LLC
Other
Eligibility
18 Years to 120 Years
Enrollment
1,989 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 14, 2023 · Synced Jul 22, 2026, 3:33 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Two Doses of H5N1 Influenza Vaccine in Elderly Subjects

NCT01766921
View directory record Official record
Conditions
Pandemic H5N1 Influenza
Interventions
Adjuvanted H5N1 pandemic influenza vaccine
Biological
Lead sponsor
Novartis Vaccines
Industry
Eligibility
65 Years and older
Enrollment
1,393 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
12
States / cities
Phoenix, Arizona • Hollywood, Florida • Wichita, Kansas + 7 more
Source: ClinicalTrials.gov public record
Updated Jan 29, 2019 · Synced Jul 22, 2026, 3:33 AM EDT
Completed Not applicable Interventional Results available

Patient Portal Reminder/Recall for Influenza Vaccination in a Health System- RCT 2

NCT04110314
View directory record Official record
Conditions
Influenza, Respiratory Tract Infections
Interventions
Portal Reminders for Influenza Vaccination: Gain-framed, Portal Reminders for Influenza Vaccination: Loss-framed, Pre-commitment prompt
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
4 Months and older
Enrollment
430,636 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 4, 2022 · Synced Jul 22, 2026, 3:33 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Fever After Simultaneous Versus Sequential Vaccination in Young Children

NCT03165981
View directory record Official record
Conditions
Fever After Vaccination, Fever, Febrile Seizure
Interventions
PCV13, DTaP, IIV
Biological
Lead sponsor
Duke University
Other
Eligibility
12 Months to 16 Months
Enrollment
221 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
3
States / cities
Oakland, California • Atlanta, Georgia • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 17, 2024 · Synced Jul 22, 2026, 3:33 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Influenza Vaccine in Lung Transplant Patients - Seroprotection

NCT04531657
View directory record Official record
Conditions
Influenza
Interventions
Influenza vaccine
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 22, 2020 · Synced Jul 22, 2026, 3:33 AM EDT
Completed Not applicable Interventional

The Effect of a Planning Prompt on Seasonal Influenza Vaccination Rates

NCT01207232
View directory record Official record
Conditions
Seasonal Influenza
Interventions
Planning Prompt, Control Condition
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
3,272 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 21, 2010 · Synced Jul 22, 2026, 3:33 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

BRCA1/2 Flu Vaccine

NCT04499534
View directory record Official record
Conditions
BRCA1 Mutation, BRCA2 Mutation
Interventions
Seasonal influenza vaccine
Biological
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
25 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Jul 22, 2026, 3:33 AM 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 Jul 22, 2026, 3:33 AM EDT
Withdrawn Phase 1Phase 2 Interventional Accepts healthy volunteers

MAS-1 Adjuvanted Compared to Unadjuvanted Influenza Vaccines in the Elderly

NCT01623232
View directory record Official record
Conditions
Influenza Vaccines, Aged
Interventions
MAS-1 adjuvant and influenza HA antigen, standard dose, inactivated trivalent influenza vaccine (TIV)
Biological
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
65 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
4
States / cities
Palo Alto, California • Iowa City, Iowa • Minneapolis, Minnesota + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 25, 2012 · Synced Jul 22, 2026, 3:33 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of A/H1N1-SOIV (Swine Flu) Vaccine With and Without Adjuvant in Children (3 to < 9 Years)

NCT00972816
View directory record Official record
Conditions
Influenza
Interventions
MF59-eH1N1
Biological
Lead sponsor
Novartis Vaccines
Industry
Eligibility
3 Years to 8 Years
Enrollment
1,357 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
34
States / cities
Downey, California • Madera, California • Paramount, California + 29 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2016 · Synced Jul 22, 2026, 3:33 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessment, Feedback, Incentive, Exchange (AFIX OB) A Customizable Quality Improvement Intervention to Increase Maternal Vaccine Uptake

NCT04678271
View directory record Official record
Conditions
Influenza, Whooping Cough
Interventions
AFIX-OB Quality Improvement Package
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
202 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 20, 2023 · Synced Jul 22, 2026, 3:33 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Clinical Trial of CSL's 2009 H1N1 Influenza Vaccine (CSL425) in a Healthy Pediatric Population in the USA

NCT00958243
View directory record Official record
Conditions
Influenza
Interventions
CSL's 2009 H1N1 Influenza Vaccine (CSL425), Placebo
Biological
Lead sponsor
Seqirus
Industry
Eligibility
6 Months to 9 Years
Enrollment
473 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
13
States / cities
Chandler, Arizona • Melbourne, Florida • Bardstown, Kentucky + 10 more
Source: ClinicalTrials.gov public record
Updated May 22, 2018 · Synced Jul 22, 2026, 3:33 AM EDT