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ClinicalTrials.gov public records Last synced Oct 24, 2026, 7:50 AM EDT

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Showing 1–24 of 1,144 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Influenza Clear all
Completed No phase listed Observational

Respiratory Virus Outpatient Study (FLU 002 Plus)

NCT01056354
View directory record Official record
Conditions
Influenza and Other Novel Respiratory Viruses
Interventions
Not listed
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
11,719 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2017
U.S. locations
17
States / cities
San Diego, California • Denver, Colorado • Washington D.C., District of Columbia + 13 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2017 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Phase 2 Interventional Results available

A Study to Evaluate the Pharmacokinetics, Safety, and Antiviral Activity of JNJ-63623872 in Combination With Oseltamivir in Adult, and Elderly Hospitalized Participants With Influenza A Infection

NCT02532283
View directory record Official record
Conditions
Influenza A Virus
Interventions
JNJ-63623872, Placebo, Oseltamivir
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 85 Years
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
14
States / cities
Fresno, California • Long Beach, California • Stanford, California + 11 more
Source: ClinicalTrials.gov public record
Updated Mar 27, 2020 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity Study of QIVc in Healthy Pediatric Subjects

NCT04074928
View directory record Official record
Conditions
Influenza, Human, Virus Diseases
Interventions
QIVc, Comparator QIV
Biological
Lead sponsor
Seqirus
Industry
Eligibility
6 Months to 47 Months
Enrollment
2,414 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
47
States / cities
Mobile, Alabama • Anaheim, California • Downey, California + 37 more
Source: ClinicalTrials.gov public record
Updated Jan 12, 2022 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Annual Study for Collection of Serum Samples in Children and Older Adults Receiving the 2020-2021 Formulations of Fluzone Quadrivalent Vaccine and Fluzone High-Dose Quadrivalent Vaccine, Respectively

NCT04551677
View directory record Official record
Conditions
Influenza Immunization, Healthy Volunteers
Interventions
Fluzone Quadrivalent vaccine, No Preservative (0.5-mL dose), 2020-2021 formulation, Fluzone High-Dose Quadrivalent vaccine (0.7-mL dose), 2020-2021 formulation
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months to 84 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
2
States / cities
Bardstown, Kentucky • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Sep 12, 2025 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of the Safety and Immunogenicity of a Novel H5N1 Influenza Vaccine in Healthy Adults Age 18-49

NCT01658800
View directory record Official record
Conditions
Influenza
Interventions
VAX161C vaccine
Biological
Lead sponsor
VaxInnate Corporation
Industry
Eligibility
18 Years to 49 Years
Enrollment
275 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
2
States / cities
South Miami, Florida • Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 6, 2015 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

REDucing Influenza Among University Students, University of California at Berkeley

NCT00448773
View directory record Official record
Conditions
Influenza-like Illness, Influenza
Interventions
Online education
Behavioral
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
17 Years and older
Enrollment
3,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Berkeley, California
Source: ClinicalTrials.gov public record
Updated Jan 7, 2010 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Not applicable Interventional

Pilot Text Message for Influenza Vaccination

NCT01761734
View directory record Official record
Conditions
Influenza
Interventions
text message
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 24, 2014 · Synced Oct 24, 2026, 7:50 AM EDT
Withdrawn No phase listed Observational

Pharmacokinetic Assessment of Peramivir in Hospitalized Adults Undergoing Continuous Renal Replacement Therapy

NCT01146353
View directory record Official record
Conditions
Influenza, Renal Failure
Interventions
Not listed
Lead sponsor
Midwestern University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 20, 2018 · Synced Oct 24, 2026, 7:50 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 15, 2023 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Phase II Study to Investigate the Kinetics of the Immune Response Generated by Influenza Virus Vaccine.

NCT00192309
View directory record Official record
Conditions
Influenza
Interventions
CAIV-T, TIV, Placebo
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001
U.S. locations
1
States / cities
Stamford, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 14, 2012 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Phase 4 Interventional Results available

ED Influenza Therapeutic Pilot Study: Oseltamivir vs. Peramivir

NCT02609399
View directory record Official record
Conditions
Influenza
Interventions
Oseltamivir, Peramivir
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 100 Years
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
2
States / cities
Phoenix, Arizona • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 4, 2019 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Predict + Protect Study: Exploring the Effectiveness of a Predictive Health Education Intervention on the Adoption of Protective Behaviors Related to ILI

NCT06229444
View directory record Official record
Conditions
Influenza, Influenza A, Influenza B, COVID-19, Respiratory Syncytial Virus (RSV)
Interventions
ILI Predictive Alerts, Reactive Content, and Proactive Content, ILI Predictive Alerts, Reactive Content, Proactive Content, No Intervention
Behavioral
Lead sponsor
Evidation Health
Industry
Eligibility
18 Years and older
Enrollment
17,043 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
San Mateo, California
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Two Doses of Multimeric-001 (M-001) Followed by Influenza Vaccine

NCT03058692
View directory record Official record
Conditions
Influenza, Influenza Immunisation
Interventions
Influenza Multimeric-001 Vaccine, Placebo, Quadrivalent Recombinant Seasonal Influenza Vaccine
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
3
States / cities
Iowa City, Iowa • Cincinnati, Ohio • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 18, 2020 · Synced Oct 24, 2026, 7:50 AM 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 24, 2026, 7:50 AM EDT
Completed Phase 2 Interventional

Mucosal and Systemic Immunity After Viral Challenge of Healthy Volunteers Vaccinated With Inactivated Influenza Vaccine Via the Intranasal Versus Intramuscular Route

NCT03845231
View directory record Official record
Conditions
Influenza
Interventions
Flucelvax(R), Human Challenge virus
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 55 Years
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 10, 2020 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Phase 3 Interventional

Safety and Efficacy Study of Nitazoxanide in the Treatment of Acute Uncomplicated Influenza

NCT01610245
View directory record Official record
Conditions
Influenza
Interventions
Nitazoxanide, Oseltamivir, Placebo Oral Tablet, Placebo Oral Capsule
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
13 Years to 65 Years
Enrollment
1,941 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
136
States / cities
Birmingham, Alabama • Dothan, Alabama • Hoover, Alabama + 121 more
Source: ClinicalTrials.gov public record
Updated Mar 29, 2018 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Not applicable Interventional Results available

A Study of the GRIP Influenza and SARS-CoV-2 POC Assays

NCT05674370
View directory record Official record
Conditions
COVID-19, Influenza
Interventions
GRIP Electronic Diagnostic Chip, Laboratory-based nucleic acid amplification tests (NAATs)
Device · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 21, 2024 · Synced Oct 24, 2026, 7:50 AM EDT
Terminated No phase listed Observational

Study of Maternal Hepatitis C Infection and Influenza Vaccination in Pregnancy

NCT00810875
View directory record Official record
Conditions
Hepatitis C
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
Not listed
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 25, 2014 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Pharmacokinetics of Oseltamivir Carboxylate In Morbidly Obese Subjects

NCT01179919
View directory record Official record
Conditions
Obesity
Interventions
Oseltamivir
Drug
Lead sponsor
Manjunath Prakash Pai
Other
Eligibility
18 Years to 50 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Paramaus, New Jersey
Source: ClinicalTrials.gov public record
Updated Feb 9, 2017 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Testing Multiple Behavioral Science Strategies to Increase Flu-Shot Rates

NCT04565353
View directory record Official record
Conditions
Influenza, Human
Interventions
Flu shot text messages
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
74,811 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
2
States / cities
Danville, Pennsylvania • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 1, 2022 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Phase 3 Interventional Results available

Safety, PK and Effectiveness of IV Peramivir in Elderly and Higher Risk Subjects With Uncomplicated Influenza

NCT02635724
View directory record Official record
Conditions
Influenza
Interventions
Peramivir
Drug
Lead sponsor
BioCryst Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
15
States / cities
Brooksville, Florida • Lakeland, Florida • Miami, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Mar 23, 2021 · Synced Oct 24, 2026, 7:50 AM EDT
Active, not recruiting Not applicable Interventional

Comparison of Nasopharyngeal Swab v. Nasopharyngeal Saline Wash or Saliva Collection in Testing for Respiratory Viruses

NCT05864118
View directory record Official record
Conditions
Respiratory Tract Infections
Interventions
Respiratory pathogen panel PCR test, COVID-19 antibody test
Diagnostic Test
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Apr 17, 2026 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Immunogenicity and Safety Study of Different Formulations of GlaxoSmithKline (GSK) Biologicals H7N1 Influenza Vaccine Administered to Adults 21 to 64 Years of Age

NCT01934127
View directory record Official record
Conditions
Influenza
Interventions
Investigational H7N1 vaccine GSK2789869A, Investigational H7N1 vaccine GSK2789868A, Placebo
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
21 Years to 64 Years
Enrollment
427 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
6
States / cities
Miami, Florida • Stockbridge, Georgia • Las Vegas, Nevada + 3 more
Source: ClinicalTrials.gov public record
Updated May 8, 2017 · Synced Oct 24, 2026, 7:50 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Two Doses of H5N1 Influenza Vaccine in Healthy Adults

NCT01776541
View directory record Official record
Conditions
Pandemic H5N1 Influenza
Interventions
Adjuvanted H5N1 pandemic influenza vaccine
Biological
Lead sponsor
Novartis Vaccines
Industry
Eligibility
18 Years to 64 Years
Enrollment
979 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
4
States / cities
Miami, Florida • St Louis, Missouri • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Feb 3, 2015 · Synced Oct 24, 2026, 7:50 AM EDT