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ClinicalTrials.gov public records Last synced Oct 22, 2026, 11:42 PM EDT

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Showing 1–24 of 1,107 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Influenza, Human Clear all
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Study Evaluating the Safety and Tolerability of a Seasonal Influenza Vaccine Containing LIQ001

NCT01224262
View directory record Official record
Conditions
Influenza
Interventions
Fluzone® (2010/2011 Inactivated Trivalent Influenza Vaccine), LIQ001 (0.45mg), LIQ001 (1.8mg)
Biological
Lead sponsor
Liquidia Technologies, Inc.
Industry
Eligibility
18 Years and older
Enrollment
152 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Melbourne, Florida
Source: ClinicalTrials.gov public record
Updated Mar 1, 2013 · Synced Oct 22, 2026, 11:42 PM 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 22, 2026, 11:42 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

H7N9 Mix and Match With MF59 in Healthy Elderly Persons

NCT02213354
View directory record Official record
Conditions
Avian Influenza
Interventions
MF59, Influenza Virus Vaccine, Monovalent A/H7N9 A/Shanghai/2/2013
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
65 Years to 99 Years
Enrollment
479 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
10
States / cities
Decatur, Georgia • Iowa City, Iowa • Baltimore, Maryland + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 6, 2017 · Synced Oct 22, 2026, 11:42 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Phase 1 Placebo-controlled,Dose-escalation Study to Evaluate the Safety and Pharmacokinetics of MEDI8852 in Adults

NCT02350751
View directory record Official record
Conditions
Influenza
Interventions
MEDI8852, Placebo
Drug
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
94 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 13, 2015 · Synced Oct 22, 2026, 11:42 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Evaluation of the Safety and Immunogenicity of the Influenza Vaccine GSK2186877A in the Elderly

NCT00772889
View directory record Official record
Conditions
Influenza
Interventions
Influenza vaccine GSK2186877A, GSK Biologicals' Fluarix™
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
19 Years and older
Enrollment
971 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
9
States / cities
Clearwater, Florida • Coral Gables, Florida • Milford, Massachusetts + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2018 · Synced Oct 22, 2026, 11:42 PM EDT
Not listed Phase 2 Interventional

Offering Influenza and Pneumococcal Vaccine to Patients Being Evaluated in the Emergency Department

NCT00380679
View directory record Official record
Conditions
High Risk for Serious Influenza, High Risk for Pneumonia
Interventions
Influenza vaccination, Pneumococcal polysaccharide vaccination
Biological
Lead sponsor
Louisiana State University Health Sciences Center in New Orleans
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
2
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Sep 26, 2006 · Synced Oct 22, 2026, 11:42 PM 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 9, 2024 · Synced Oct 22, 2026, 11:42 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Safety and Immunogenicity of Quadrivalent Influenza mRNA Vaccine MRT5407 in Adult Participants18 Years of Age and Older

NCT05553301
View directory record Official record
Conditions
Influenza Immunization
Interventions
Quadrivalent Influenza mRNA Vaccine MRT5407, Quadrivalent Recombinant Influenza Vaccine, Quadrivalent Influenza Standard Dose Vaccine, Quadrivalent Influenza High-Dose Vaccine
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
560 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
23
States / cities
Rolling Hills Estates, California • San Diego, California • DeLand, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated Jan 24, 2025 · Synced Oct 22, 2026, 11:42 PM EDT
Recruiting No phase listed Observational

Influenza & COVID-19 Obstetric and Perinatal Epidemiology Study in India

NCT06168019
View directory record Official record
Conditions
Influenza, COVID-19, SARS-COV-2 Infection, Other Respiratory Viruses, Perinatal Morbidity, Infant Morbidity
Interventions
Exposures
Other
Lead sponsor
Boston University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
10,000 participants
Timeline
2023 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 28, 2025 · Synced Oct 22, 2026, 11:42 PM 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 22, 2026, 11:42 PM EDT
Terminated Phase 3 Interventional Results available

Intramuscular Peramivir in Subjects With Uncomplicated Acute Influenza

NCT00610935
View directory record Official record
Conditions
Influenza
Interventions
Peramivir, Placebo
Drug
Lead sponsor
BioCryst Pharmaceuticals
Industry
Eligibility
18 Years to 75 Years
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
96
States / cities
Millbrook, Alabama • Tuscaloosa, Alabama • Phoenix, Arizona + 80 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2021 · Synced Oct 22, 2026, 11:42 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Safety and Immunogenicity Trial in Adults 65 Years of Age or Over to Prevent Influenza

NCT00706732
View directory record Official record
Conditions
Influenza
Interventions
AVX502, Placebo
Biological
Lead sponsor
AlphaVax, Inc.
Industry
Eligibility
65 Years and older
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 12, 2012 · Synced Oct 22, 2026, 11:42 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study to Evaluate the Immunogenicity and Safety of GlaxoSmithKline (GSK) Biologicals' Herpes Zoster Vaccine GSK1437173A When Co-administered With GSK Biologicals' Seasonal Influenza Vaccine GSK2321138A in Adults Aged 50 Years and Older

NCT01954251
View directory record Official record
Conditions
Herpes Zoster
Interventions
Herpes Zoster vaccine GSK 1437173A, GSK Biologicals' quadrivalent seasonal influenza vaccine FLU-D-QIV GSK2321138A
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
50 Years and older
Enrollment
829 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
3
States / cities
Phoenix, Arizona • Carnegie, Pennsylvania • Erie, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 2, 2018 · Synced Oct 22, 2026, 11:42 PM EDT
Completed Phase 3 Interventional Results available

Study to Assess Efficacy and Safety of Baloxavir Marboxil In Combination With Standard-of-Care Neuraminidase Inhibitor In Hospitalized Participants With Severe Influenza

NCT03684044
View directory record Official record
Conditions
Influenza
Interventions
Baloxavir Marboxil, Placebo
Drug · Other
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
12 Years and older
Enrollment
363 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
14
States / cities
Torrance, California • Denver, Colorado • Decatur, Georgia + 11 more
Source: ClinicalTrials.gov public record
Updated Jan 6, 2021 · Synced Oct 22, 2026, 11:42 PM 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 22, 2026, 11:42 PM EDT
Completed Not applicable Interventional

Centralized IIS-based Reminder/Recall to Increase Childhood Influenza Vaccination Rates_2nd Trial in Colorado

NCT03246100
View directory record Official record
Conditions
Reminder Systems, Influenza Vaccines
Interventions
Reminders
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
6 Months to 17 Years
Enrollment
25,531 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 24, 2019 · Synced Oct 22, 2026, 11:42 PM EDT
Completed No phase listed Observational

Natural History of Systemic and Nasal Mucosal Immunity After Influenza Vaccination in a Pediatric Population

NCT04963166
View directory record Official record
Conditions
Influenza Immunity
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
2 Years to 17 Years
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Oct 22, 2026, 11:42 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Prospective Study to Evaluate the Safety of a New Monovalent Intranasal Influenza Vaccine

NCT00873912
View directory record Official record
Conditions
Healthy
Interventions
Monovalent influenza virus vaccine, Placebo
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 49 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
3
States / cities
Daytona Beach, Florida • Portland, Oregon • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 14, 2011 · Synced Oct 22, 2026, 11:42 PM EDT
Completed Not applicable Interventional Results available

Safe Administration of Flu Vaccine to Egg Allergic Children

NCT01264601
View directory record Official record
Conditions
Egg Allergy
Interventions
Trivalent Influenza Vaccine
Biological
Lead sponsor
University of Michigan
Other
Eligibility
6 Months to 24 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
5
States / cities
San Diego, California • Ann Arbor, Michigan • Rochester, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 26, 2017 · Synced Oct 22, 2026, 11:42 PM EDT
Completed Phase 4 Interventional Results available

Influenza Vaccination for Flu Prevention in Patients With Plasma Cell Disorders

NCT04080531
View directory record Official record
Conditions
Plasma Cell Neoplasm
Interventions
Pneumococcal 13-valent Conjugate Vaccine, Trivalent Influenza Vaccine
Biological
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 28, 2025 · Synced Oct 22, 2026, 11:42 PM EDT
Completed Phase 3 Interventional Results available

A Phase III, Randomized, Double-Blind, Placebo Controlled Trial to Evaluate the Efficacy and Safety of Nitazoxanide in the Treatment of Uncomplicated Influenza

NCT03336619
View directory record Official record
Conditions
Influenza
Interventions
Nitazoxanide, Placebo
Drug
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
12 Years and older
Enrollment
1,030 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
34
States / cities
Alabaster, Alabama • Birmingham, Alabama • Hoover, Alabama + 28 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2022 · Synced Oct 22, 2026, 11:42 PM 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 Recombinant Influenza Vaccine in Adult Participants 50 Years of Age and Older

NCT06695130
View directory record Official record
Conditions
COVID-19 Immunization, Influenza Immunization
Interventions
RIV (recombinant influenza vaccine), rC19 (dose 1), RIV + rC19 (dose 1), RIV + rC19 (dose 2), RIV + rC19 (dose 3), RIV + 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
Phoenix, Arizona • Cerritos, California • Vista, California + 9 more
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Oct 22, 2026, 11:42 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Co-Administration of AS03 Adjuvanted A/H7N9 IIV With IIV4

NCT03318315
View directory record Official record
Conditions
Avian Influenza, Influenza, Influenza Immunisation
Interventions
AS03, Inactivated influenza H7N9 vaccine, Influenza Virus Quadrivalent Inactivated Vaccine, Phosphate Buffered Saline (PBS) diluent
Drug · Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
19 Years to 64 Years
Enrollment
149 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
4
States / cities
Birmingham, Alabama • Baltimore, Maryland • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 6, 2020 · Synced Oct 22, 2026, 11:42 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

A Clinical Study to Evaluate the Efficacy, Safety and Immunogenicity of an Adjuvanted Influenza Vaccine Compared to a Non-adjuvanted Influenza Vaccine in Adults ≥65 Years of Age

NCT06087640
View directory record Official record
Conditions
Influenza, Human
Interventions
aQIV or aTIV, QIV or TIV
Biological
Lead sponsor
Seqirus
Industry
Eligibility
65 Years and older
Enrollment
38,769 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
111
States / cities
Birmingham, Alabama • Cullman, Alabama • Phoenix, Arizona + 96 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Oct 22, 2026, 11:42 PM EDT