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ClinicalTrials.gov public records Last synced Oct 6, 2026, 9:04 AM EDT

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Showing 1–24 of 1,154 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: INFLUENZA VACCINE Clear all
Completed Phase 4 Interventional Accepts healthy volunteers

Study of Immune Responses to Influenza Vaccination

NCT03346772
View directory record Official record
Conditions
Influenza Vaccination
Interventions
Influenza vaccination
Biological
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 6, 2026, 9:04 AM EDT
Completed Not applicable Interventional Results available

The Effect of Fact Versus Myth Messages on Receipt of Influenza Vaccination

NCT01009645
View directory record Official record
Conditions
Influenza Vaccination
Interventions
Fact Only Education Message, Fact and Myth Educational Message, Fact, Myth, Why Educational Message, Control Educational Message
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
50 Years and older
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 30, 2023 · Synced Oct 6, 2026, 9:04 AM 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 6, 2026, 9:04 AM EDT
Completed Phase 3 Interventional Results available

Safety, PK and Effectiveness of IV Peramivir Versus Oseltamivir in Pediatric Subjects With Uncomplicated Influenza

NCT02369159
View directory record Official record
Conditions
Influenza
Interventions
Peramivir, Oseltamivir
Drug
Lead sponsor
BioCryst Pharmaceuticals
Industry
Eligibility
0 Days to 17 Years
Enrollment
137 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
9
States / cities
Shreveport, Louisiana • Dayton, Ohio • Smithfield, Pennsylvania + 6 more
Source: ClinicalTrials.gov public record
Updated Mar 23, 2021 · Synced Oct 6, 2026, 9:04 AM EDT
Completed No phase listed Observational

Determining the Relationship Between Gut Microbiota and Immune Response to Influenza or COVID-19 Vaccine

NCT05584735
View directory record Official record
Conditions
Inflammatory Bowel Diseases
Interventions
Influenza vaccine, COVID-19 vaccine
Biological
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 64 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 31, 2025 · Synced Oct 6, 2026, 9:04 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Study of the Immunogenicity and Safety of a Quadrivalent Influenza Vaccine (VAX2012Q) in Adults 18-64 Years

NCT02434276
View directory record Official record
Conditions
Influenza
Interventions
VAX2012Q, Fluzone Quadrivalent
Biological
Lead sponsor
VaxInnate Corporation
Industry
Eligibility
18 Years to 64 Years
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
6
States / cities
Huntsville, Alabama • San Diego, California • Melbourne, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 26, 2015 · Synced Oct 6, 2026, 9:04 AM EDT
Completed No phase listed Observational

Study to Assess the Burden of Mild Outcomes (Physician Office Visits) Due to Influenza in the United States

NCT02019732
View directory record Official record
Conditions
Influenza
Interventions
Data collection
Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
Not listed
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 10, 2017 · Synced Oct 6, 2026, 9:04 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immunogenicity of a Monovalent mRNA Vaccine Encoding Influenza Hemagglutinin in Adult Participants 18 Years of Age and Older

NCT06118151
View directory record Official record
Conditions
Influenza, Influenza Immunization
Interventions
Influenza Hemagglutinin mRNA vaccine, Quadrivalent Recombinant Influenza Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
388 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
20
States / cities
Rolling Hills Estates, California • San Diego, California • Coral Gables, Florida + 14 more
Source: ClinicalTrials.gov public record
Updated Nov 7, 2023 · Synced Oct 6, 2026, 9:04 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Baloxavir Versus Oseltamivir for Nursing Home Influenza Outbreaks

NCT05012189
View directory record Official record
Conditions
Influenza, Influenza, Human, Influenza -Like Illness
Interventions
Oseltamivir, Baloxavir
Drug
Lead sponsor
Insight Therapeutics, LLC
Other
Eligibility
18 Years to 120 Years
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 15, 2023 · Synced Oct 6, 2026, 9:04 AM EDT
Completed Phase 4 Interventional Results available

INfluenza Vaccine to Effectively Stop Cardio Thoracic Events and Decompensated Heart Failure

NCT02787044
View directory record Official record
Conditions
Heart Failure, Myocardial Infarction
Interventions
High Dose Trivalent Influenza Vaccine, Standard Dose Quadrivalent Influenza Vaccine
Biological
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
5,388 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
127
States / cities
Birmingham, Alabama • Huntsville, Alabama • Anchorage, Alaska + 93 more
Source: ClinicalTrials.gov public record
Updated Jan 21, 2022 · Synced Oct 6, 2026, 9:04 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 25, 2016 · Synced Oct 6, 2026, 9:04 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Immunogenicity, Safety and Tolerability of a Plant-Derived Seasonal Virus-Like-Particle Quadrivalent Influenza Vaccine in Adults

NCT02233816
View directory record Official record
Conditions
Virus Diseases, RNA Virus Infections, Respiratory Tract Diseases, Respiratory Tract Infections
Interventions
Low dose of quadrivalent VLP vaccine, Medium dose of quadrivalent VLP vaccine, High dose of quadrivalent VLP vaccine, Placebo
Biological
Lead sponsor
Medicago
Industry
Eligibility
18 Years to 49 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
2
States / cities
Hollywood, Florida • Miami, Florida
Source: ClinicalTrials.gov public record
Updated Nov 13, 2019 · Synced Oct 6, 2026, 9:04 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Vaccination Efficacy With Metformin in Older Adults

NCT03996538
View directory record Official record
Conditions
Aging, Age-Related Immunodeficiency, Vaccine Response Impaired
Interventions
Metformin Hydrochloride Extended-Release Tablets, Influenza Vaccine
Drug · Biological
Lead sponsor
UConn Health
Other
Eligibility
65 Years and older
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 23, 2020 · Synced Oct 6, 2026, 9:04 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Immunogenicity & Safety of GSK's Avian Flu Vaccine 1557484A Given to Adults Aged ≥18 Years

NCT00719043
View directory record Official record
Conditions
Influenza
Interventions
A/turkey H5N1 vaccine, Influenza A (H5N1) Virus Monovalent Vaccine, Adjuvanted (A/Indonesia), Placebo
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
841 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
10
States / cities
Denver, Colorado • Chicago, Illinois • Metairie, Louisiana + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 9, 2018 · Synced Oct 6, 2026, 9:04 AM EDT
Completed No phase listed Observational

Ovarian Cancer and Immune Response to Flu Vaccine

NCT00478387
View directory record Official record
Conditions
Ovarian Cancer
Interventions
The current season's trivalent killed influenza vaccine
Biological
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older · Female only
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 5, 2016 · Synced Oct 6, 2026, 9:04 AM EDT
Recruiting No phase listed Observational

Umbilical Cord Blood Transplantation From Unrelated Donors

NCT03016806
View directory record Official record
Conditions
Acute Leukemia, Immune Deficiency Disorder, Congenital Hematological Disorder, Metabolism Disorder, Aplastic Anemia, Myelodysplastic Syndromes, Chronic Leukemia, Lymphoma, Multiple Myeloma, Solid Tumor
Interventions
Total Body Irradiation 1200 cGy, Total Body Irradiation 200 cGy, Cyclophosphamide, Mesna, Cord Blood Infusion, Busulfan, Fludarabine, Melphalan
Radiation · Drug · Procedure
Lead sponsor
University of Rochester
Other
Eligibility
2 Months to 75 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2027
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Oct 10, 2025 · Synced Oct 6, 2026, 9:04 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 14, 2016 · Synced Oct 6, 2026, 9:04 AM EDT
Withdrawn Phase 1Phase 2 Interventional

Pharmacokinetic/Pharmacodynamic and Safety Evaluation of Intravenous Peramivir in Children With Influenza

NCT01063933
View directory record Official record
Conditions
Influenza
Interventions
Peramivir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Up to 17 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2012
U.S. locations
29
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Orange, California + 25 more
Source: ClinicalTrials.gov public record
Updated Nov 11, 2011 · Synced Oct 6, 2026, 9:04 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A/H5N1 Virus-Like Particle Antigen Dose Ranging Study With Adjuvant 2

NCT01596725
View directory record Official record
Conditions
Influenza (Pandemic)
Interventions
Monovalent Avian Influenza VLP (H5N1), Monovalent Avian Influenza VLP (H5N1); Adjuvant, Saline Placebo
Biological
Lead sponsor
Novavax
Industry
Eligibility
18 Years to 49 Years
Enrollment
333 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
5
States / cities
Anaheim, California • Miami, Florida • Pembroke Pines, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2014 · Synced Oct 6, 2026, 9:04 AM EDT
Completed Phase 1 Interventional

Safety and Dose Study of Peramivir for Influenza Treatment

NCT00297050
View directory record Official record
Conditions
Influenza
Interventions
Peramivir
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 6, 2026, 9:04 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Safety, Tolerability and Immunogenicity of a Plant-made Seasonal Quadrivalent VLP Influenza Vaccine in Adults

NCT01991587
View directory record Official record
Conditions
Virus Diseases, RNA Virus Infections, Respiratory Tract Diseases, Respiratory Tract Infections
Interventions
Low dose of quadrivalent VLP vaccine, Medium dose of quadrivalent VLP vaccine, High dose of quadrivalent VLP vaccine, Placebo
Biological
Lead sponsor
Medicago
Industry
Eligibility
18 Years to 49 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jun 11, 2020 · Synced Oct 6, 2026, 9:04 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of the 2015-2016 Formulation of Fluzone® Quadrivalent (Influenza Vaccine) Among Healthy Children

NCT02539108
View directory record Official record
Conditions
Influenza
Interventions
Fluzone® Quadrivalent Influenza Vaccine, No Preservative
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months to 8 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
2
States / cities
Bardstown, Kentucky • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Nov 29, 2016 · Synced Oct 6, 2026, 9:04 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Motivational Interviewing for Vaccine Uptake in Latinx Adults

NCT06062056
View directory record Official record
Conditions
Vaccine Hesitancy
Interventions
EHR alert, Motivational Interviewing, Warm hand off to nurse
Other · Behavioral
Lead sponsor
Boston College
Other
Eligibility
18 Years and older
Enrollment
3,698 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 15, 2025 · Synced Oct 6, 2026, 9:04 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of the 2005-2006 Fluzone® Vaccine

NCT00258830
View directory record Official record
Conditions
Influenza
Interventions
Fluzone®: Influenza Virus Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced Oct 6, 2026, 9:04 AM EDT