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ClinicalTrials.gov public records Last synced Oct 6, 2026, 12:12 AM EDT

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Showing 73–96 of 1,102 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Influenza, Human Clear all
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Comparative Immunogenicity of Concomitant vs Sequential mRNA COVID-19 and Influenza Vaccinations

NCT06020118
View directory record Official record
Conditions
Influenza, COVID-19
Interventions
Simultaneous Vaccination (Influenza Vaccine and mRNA COVID booster), Sequential Vaccination (Influenza vaccine then mRNA COVID booster), Sequential Vaccination (mRNA COVID booster then Influenza vaccine)
Biological
Lead sponsor
Duke University
Other
Eligibility
6 Years to 64 Years
Enrollment
455 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
8
States / cities
Phoenix, Arizona • Tempe, Arizona • Atlanta, Georgia + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 13, 2025 · Synced Oct 6, 2026, 12:12 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety/Efficacy Study of Seqirus A/H7N9 IIV With or Without MF59(R) Adjuvant to Prevent Avian Influenza

NCT03682120
View directory record Official record
Conditions
Avian Influenza, Influenza Immunisation
Interventions
A/H7N9, MF59, Phosphate Buffered Saline (PBS) diluent
Biological · Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
372 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
7
States / cities
Birmingham, Alabama • St Louis, Missouri • Cincinnati, Ohio + 4 more
Source: ClinicalTrials.gov public record
Updated May 17, 2021 · Synced Oct 6, 2026, 12:12 AM EDT
Completed No phase listed Observational

Influenza in People With Normal and Weakened Immune Systems

NCT00533182
View directory record Official record
Conditions
Viral Infections, Respiratory Infections
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
2 Years and older
Enrollment
137 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2022
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 10, 2022 · Synced Oct 6, 2026, 12:12 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Beta-glucan and Immune Response to Influenza Vaccine

NCT05074303
View directory record Official record
Conditions
Healthy Aging
Interventions
Influenza Vaccine, Beta-glucan, Placebo
Biological · Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
50 Years to 100 Years
Enrollment
78 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Nov 6, 2025 · Synced Oct 6, 2026, 12:12 AM EDT
Active, not recruiting Not applicable Interventional

Kaiser Colorado Flu Nudge

NCT07372950
View directory record Official record
Conditions
Influenza, Vaccination
Interventions
Behavioral economics framed test messaging
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
6 Months and older
Enrollment
100,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Oct 6, 2026, 12:12 AM EDT
Completed Phase 4 Interventional Results available

Pharmacokinetics of Tamiflu® (Oseltamivir) in Patients Receiving Extracorporeal Membrane Oxygenation (ECMO)and or Continuous Venovenous Hemodialysis (CVVHD)

NCT01048879
View directory record Official record
Conditions
Critically Ill Renal Failure Requiring CVVHD and Oseltamivir, Critically Ill Requiring ECMO and Oseltamivir
Interventions
pharmacokinetic blood sampling, pharmacokinetic blood and dialysate sampling
Procedure
Lead sponsor
University of Michigan
Other
Eligibility
Not listed
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 21, 2012 · Synced Oct 6, 2026, 12:12 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Half-Dose Flu Vaccine Study in Healthy Adults

NCT00006146
View directory record Official record
Conditions
Influenza
Interventions
Approved influenza virus vaccine.
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
840 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000
U.S. locations
6
States / cities
Torrance, California • College Park, Maryland • St Louis, Missouri + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Oct 6, 2026, 12:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of a Fermented Soy Product on Cognition, Immune Status and Vaccine

NCT04866576
View directory record Official record
Conditions
Cognitive Change, Inflammation, Immune Response
Interventions
Q CAN PLUS, Placebo
Dietary Supplement
Lead sponsor
Loma Linda University
Other
Eligibility
65 Years to 80 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Dec 9, 2025 · Synced Oct 6, 2026, 12:12 AM EDT
Completed Phase 3 Interventional Results available

Safety Study of IV Peramivir in Hospitalized Subjects With Confirmed or Suspected Influenza

NCT00957996
View directory record Official record
Conditions
Seasonal Influenza, Cough, Sore Throat, Nasal Congestion, Myalgia, Headache, Fatigue
Interventions
Peramivir
Drug
Lead sponsor
BioCryst Pharmaceuticals
Industry
Eligibility
6 Years and older
Enrollment
234 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
79
States / cities
Dothan, Alabama • Mobile, Alabama • Jonesboro, Arkansas + 76 more
Source: ClinicalTrials.gov public record
Updated Feb 12, 2015 · Synced Oct 6, 2026, 12:12 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Multi-Year Study of Fluzone High-Dose Influenza Vaccine Compared With Fluzone® Vaccine in Adults Aged 65 Years and Older

NCT00976027
View directory record Official record
Conditions
Influenza
Interventions
Trivalent inactivated influenza vaccine High Dose, Trivalent inactivated influenza vaccine
Biological
Lead sponsor
Sanofi
Industry
Eligibility
65 Years and older
Enrollment
9,172 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
96
States / cities
Birmingham, Alabama • Glendale, Arizona • Mesa, Arizona + 86 more
Source: ClinicalTrials.gov public record
Updated Aug 1, 2012 · Synced Oct 6, 2026, 12:12 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, 12:12 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

SARS-CoV-2/COVID-19 Study of Next Generation Non-Invasive Passive Detection Technologies (Level42)

NCT05765396
View directory record Official record
Conditions
COVID-19, SARS-CoV-2 Virus, COVID-19 Pneumonia, Respiratory Infection, COVID-19 ARDS, Corona Virus Infection, Influenza, RSV Infection
Interventions
imPulse™ Systems (Una and TOR) infrasound-to-ultrasound e-stethoscope
Device
Lead sponsor
The Geneva Foundation
Other
Eligibility
18 Years to 89 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Fort Sam Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 15, 2026 · Synced Oct 6, 2026, 12:12 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Age and Response to Flu Vaccines

NCT03328325
View directory record Official record
Conditions
Influenza, Influenza Immunisation
Interventions
Influenza Virus Quadrivalent Inactivated Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
9 Years to 99 Years
Enrollment
152 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
2
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Aug 28, 2026 · Synced Oct 6, 2026, 12:12 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of 20vPnC Coadministered With SIIV in Adults ≥65 Years of Age

NCT04526574
View directory record Official record
Conditions
Pneumococcal Disease
Interventions
Experimental 20-valent pneumococcal conjugate vaccine (20vPnC), Saline, Influenza vaccine
Biological · Other
Lead sponsor
Pfizer
Industry
Eligibility
65 Years and older
Enrollment
1,796 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
63
States / cities
Mobile, Alabama • Chandler, Arizona • Phoenix, Arizona + 53 more
Source: ClinicalTrials.gov public record
Updated Jul 8, 2022 · Synced Oct 6, 2026, 12:12 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

University of Wisconsin Meditation & Exercise Cold Study

NCT01654289
View directory record Official record
Conditions
Acute Respiratory Infection
Interventions
Mindfulness Meditation, Exercise
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
30 Years to 69 Years
Enrollment
413 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 7, 2018 · Synced Oct 6, 2026, 12:12 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Study to Eliminate Hib Carriage in Rural Alaska Native Villages

NCT00153556
View directory record Official record
Conditions
Haemophilus Influenzae Type B, Carrier State
Interventions
Hib conjugate vaccine (HbOC, Wyeth Vaccines)
Biological
Lead sponsor
Centers for Disease Control and Prevention
Federal
Eligibility
0 Years and older
Enrollment
3,200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2003
U.S. locations
1
States / cities
Anchorage, Alaska
Source: ClinicalTrials.gov public record
Updated Sep 12, 2005 · Synced Oct 6, 2026, 12:12 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Interferon as a Mucosal Adjuvant for Influenza Vaccine Given Intranasally

NCT00436046
View directory record Official record
Conditions
Influenza
Interventions
Trivalent inactivated influenza virus vaccine (2006-2007 formulation), Type 1 interferon
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 13, 2011 · Synced Oct 6, 2026, 12:12 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Single Group Study of the Safety of and Immune Response to a Bird Flu Virus Vaccine (H5N1) in Healthy Adults

NCT00488046
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H5N1 (6-2) AA ca Recombinant (A/Hong Kong/213/2003 x A/AnnArbor/6/60 ca)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 20, 2007 · Synced Oct 6, 2026, 12:12 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Immunogenicity and Safety Study of GSK Biologicals' Influenza Vaccine When Administered in Children

NCT01196988
View directory record Official record
Conditions
Influenza
Interventions
Influenza vaccine GSK2321138A, FluarixTM, Influenza vaccine GSK2604409A
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
6 Months to 17 Years
Enrollment
3,027 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
14
States / cities
Sacramento, California • Boca Raton, Florida • Wichita, Kansas + 10 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2018 · Synced Oct 6, 2026, 12:12 AM EDT
Completed No phase listed Observational

Detection of Influenza A, Influenza B, and RSV Using the Liat™ Assays on the Liat™ Analyzer

NCT02067286
View directory record Official record
Conditions
Influenza A, Influenza B, Respiratory Syncytial Virus (RSV)
Interventions
Not listed
Lead sponsor
IQuum, Inc.
Industry
Eligibility
Not listed
Enrollment
1,642 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
8
States / cities
Delray Beach, Florida • Savannah, Georgia • Indianapolis, Indiana + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 31, 2016 · Synced Oct 6, 2026, 12:12 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Learn How Safe, Tolerable and Capable of Producing an Immune Response is, a Modified RNA Vaccine Against Pandemic Influenza

NCT06179446
View directory record Official record
Conditions
Grippe, Influenza, Vaccines
Interventions
pdmFlu vaccine, Placebo, Licensed influenza vaccine
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 84 Years
Enrollment
157 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
3
States / cities
New Haven, Connecticut • Hollywood, Florida • New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 23, 2026 · Synced Oct 6, 2026, 12:12 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Phase 1/2 Clinical Trial of an Alphavirus Replicon Vaccine for Influenza

NCT00440362
View directory record Official record
Conditions
Influenza
Interventions
AVX502, Placebo
Biological
Lead sponsor
AlphaVax, Inc.
Industry
Eligibility
18 Years to 40 Years
Enrollment
216 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Nov 10, 2008 · Synced Oct 6, 2026, 12:12 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 6, 2026, 12:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vaccine Acceptance in Pregnant Minority Women

NCT01740310
View directory record Official record
Conditions
Pregnancy
Interventions
Maternal Vaccine Education
Behavioral
Lead sponsor
Emory University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
4
States / cities
Atlanta, Georgia • Decatur, Georgia • Riverdale, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 9, 2015 · Synced Oct 6, 2026, 12:12 AM EDT