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ClinicalTrials.gov public records Last synced Oct 17, 2026, 4:05 AM EDT

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Showing 721–744 of 1,125 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Influenza Virus Vaccine Clear all
Completed Phase 2 Interventional

Oral Triple Combination Antiviral Drug Therapy for Treatment of Influenza A in Immunocompromised Subjects

NCT00979251
View directory record Official record
Conditions
Influenza
Interventions
Oseltamivir Phosphate, ADS-8902
Drug
Lead sponsor
Adamas Pharmaceuticals, Inc.
Industry
Eligibility
1 Year to 65 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
16
States / cities
San Francisco, California • Hollywood, Florida • Miramar, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2014 · Synced Oct 17, 2026, 4:05 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Impact of Metabolic Syndrome on Flu Vaccine Efficacy

NCT02653495
View directory record Official record
Conditions
Immune Deficiency, Metabolic Syndrome
Interventions
Influenza vaccine
Biological
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 28, 2017 · Synced Oct 17, 2026, 4:05 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Phase IV Trial to Collect Safety Data and Sera for Immunogenicity Testing in Healthy Children Given Fluzone® Vaccine

NCT00561002
View directory record Official record
Conditions
Influenza
Interventions
2007-2008 Influenza Virus Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months to 35 Months
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced Oct 17, 2026, 4:05 AM EDT
Completed Not applicable Interventional

The RAPID Trial: Assessing Point-of-care Influenza and Other Respiratory Virus Diagnostics

NCT03756753
View directory record Official record
Conditions
Respiratory Pathogens, Upper Respiratory Tract Illness, Lower Respiratory Tract Illness, Acute Respiratory Infection
Interventions
Results available to provider
Diagnostic Test
Lead sponsor
University of Colorado, Denver
Other
Eligibility
1 Month to 18 Years
Enrollment
913 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 9, 2021 · Synced Oct 17, 2026, 4:05 AM EDT
Completed Not applicable Interventional

Pediatric Second Influenza Dose Portal Reminder Recall

NCT04668417
View directory record Official record
Conditions
Influenza, Respiratory Tract Infections
Interventions
Portal Reminders for Second Dose of Influenza Vaccine with Direct Scheduling Link, Portal Reminders for Second Dose of Influenza Vaccine without Direct Scheduling Link
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
6 Months to 36 Months
Enrollment
698 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 28, 2021 · Synced Oct 17, 2026, 4:05 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

BPL-1357 Against H1N1 Influenza Virus Challenge

NCT07215858
View directory record Official record
Conditions
Influenza, Human
Interventions
BPL-1357 IM, BPL-1357 IN, Placebo IM, Placebo IN
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 55 Years
Enrollment
129 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
2
States / cities
Bethesda, Maryland • Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 17, 2026, 4:05 AM 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 17, 2026, 4:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Boosting COVID-19 Vaccination Uptake Using Wastewater Surveillance

NCT06698497
View directory record Official record
Conditions
Vaccine Uptake
Interventions
Communication Campaign
Behavioral
Lead sponsor
Syracuse University
Other
Eligibility
Not listed
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Sep 15, 2025 · Synced Oct 17, 2026, 4:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Prophylactic Antipyretics on Immune Responses and Fever After 2014-2015 and 2015-2016 Inactivated Influenza Vaccine

NCT02212990
View directory record Official record
Conditions
Fever
Interventions
Acetaminophen Arm, Placebo Arm, Ibuprofen Arm
Other
Lead sponsor
Duke University
Other
Eligibility
6 Months to 47 Months
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 7, 2018 · Synced Oct 17, 2026, 4:05 AM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Opioid, HIV and Immune System

NCT04304768
View directory record Official record
Conditions
Immune Defect
Interventions
Fluzone Quadrivalent
Biological
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 60 Years
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Mar 27, 2026 · Synced Oct 17, 2026, 4:05 AM EDT
Completed No phase listed Observational

Impact of Immunosuppression in IBD Patients on Response to Influenza Vaccine

NCT00542776
View directory record Official record
Conditions
Inflammatory Bowel Disease (IBD), Immunosuppressed or Non-Immunosuppressed, Influenza Vaccine, Antibody Titers, Seroprotective Titers
Interventions
blood draw
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
5 Years and older
Enrollment
146 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 1, 2008 · Synced Oct 17, 2026, 4:05 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

VRC 309: A Multi-Center, Open-Label, Randomized Phase I Study of an Investigational Influenza DNA Vaccine Followed by 2009/2010 Seasonal Influenza Trivalent Inactivated Vaccine (TIV) Compared to Two Injections of TIV in Adults 45-70 Years

NCT00995982
View directory record Official record
Conditions
Influenza, Human
Interventions
VRC-FLUDNA056-00VP
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
45 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
2
States / cities
Bethesda, Maryland • Annandale, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 17, 2026, 4:05 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Characterizing Late-season Influenza Vaccine Responses to Compare the 2023 and 2024 Vaccine Formulations

NCT06567860
View directory record Official record
Conditions
Influenza A
Interventions
Influenza Fluzone vaccine
Biological
Lead sponsor
La Jolla Institute for Immunology
Other
Eligibility
18 Years to 64 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Feb 12, 2026 · Synced Oct 17, 2026, 4:05 AM EDT
Completed No phase listed Observational

Evaluation of Viral Shedding Patterns and Clinical Outcomes of Influenza Patients

NCT01839760
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
Crucell Holland BV
Industry
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 22, 2014 · Synced Oct 17, 2026, 4:05 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Proteomic Profiling for Influenza

NCT00133588
View directory record Official record
Conditions
Influenza
Interventions
Trivalent split Inf
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
21 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Oct 17, 2026, 4:05 AM EDT
Completed No phase listed Observational

Surveillance of Influenza Virus Shedding and Immunologic Response in Immunocompromised Children and Young Adults

NCT00998803
View directory record Official record
Conditions
Influenza Virus
Interventions
Not listed
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
Up to 21 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 1, 2012 · Synced Oct 17, 2026, 4:05 AM EDT
Not yet recruiting No phase listed Observational Accepts healthy volunteers

Flu COVID Vaccine Views

NCT07871448
View directory record Official record
Conditions
Influenza, COVID-19, Vaccination Willingness
Interventions
Survey
Other
Lead sponsor
George Washington University
Other
Eligibility
18 Years to 89 Years
Enrollment
550 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
2
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 17, 2026, 4:05 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety of 3 New 6:2 Influenza Virus Reassortants in Adults

NCT01579916
View directory record Official record
Conditions
Influenza
Interventions
Trivalent Influenza Virus Vaccine, Placebo
Biological · Other
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 49 Years
Enrollment
303 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
3
States / cities
Miami, Florida • Stockbridge, Georgia • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 3, 2014 · Synced Oct 17, 2026, 4:05 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Influenza Vaccine Post Allogeneic Transplant

NCT01215981
View directory record Official record
Conditions
Hematopoietic Stem Cell Transplant, Hematologic Malignancy
Interventions
Influenza vaccine
Biological
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
6 Months and older
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 28, 2017 · Synced Oct 17, 2026, 4:05 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Cellular and Humoral Immune Response to Primary and Secondary Immunization With Subvirion H5N1 Vaccines

NCT01086566
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
18 Years to 64 Years
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jan 1, 2016 · Synced Oct 17, 2026, 4:05 AM EDT
Completed No phase listed Observational

Cellular and Molecular Characterization of the Immune Response in Healthy NIH Employees atBaseline, and After Immunization With the H1N1 or Seasonal Influenza Vaccines

NCT01191853
View directory record Official record
Conditions
Healthy Volunteers, Influenza
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years and older
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 18, 2026 · Synced Oct 17, 2026, 4:05 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

NK Cell Mediated Influenza Immunity During Pregnancy

NCT03196245
View directory record Official record
Conditions
Pregnancy Related, Influenza, Human
Interventions
There is no intervention.
Other
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
94 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2019
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jul 14, 2023 · Synced Oct 17, 2026, 4:05 AM EDT
Completed Not applicable Interventional

Assessing Fever Rates in Children Ages 24 to 59 Months After Live Attenuated Influenza Vaccine (LAIV) or Inactivated Influenza Vaccines (IIV) Using Text Messaging for U.S. Influenza Vaccines in 2012-2013 & 2013-2014

NCT01764269
View directory record Official record
Conditions
Fever
Interventions
text message surveillance for fever
Other
Lead sponsor
Columbia University
Other
Eligibility
24 Months to 59 Months
Enrollment
656 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
2
States / cities
Atlanta, Georgia • New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 24, 2014 · Synced Oct 17, 2026, 4:05 AM EDT
Completed Phase 3 Interventional

Trial to Evaluate the Efficacy and Safety of Nitazoxanide in the Treatment of Acute Uncomplicated Influenza

NCT02612922
View directory record Official record
Conditions
Influenza
Interventions
Nitazoxanide, Placebo
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
12 Years to 65 Years
Enrollment
325 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
17
States / cities
Hot Springs, Arkansas • Anaheim, California • Fresno, California + 14 more
Source: ClinicalTrials.gov public record
Updated Apr 4, 2018 · Synced Oct 17, 2026, 4:05 AM EDT