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ClinicalTrials.gov public records Last synced Oct 14, 2026, 12:16 AM EDT

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Showing 145–168 of 193 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Flu Vaccine (Year 2) Clear all
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 14, 2026, 12:16 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of Quadrivalent Influenza Vaccine Among Children

NCT01240746
View directory record Official record
Conditions
Influenza
Interventions
Licensed 2010-2011 Trivalent Influenza Vaccine, No Preservative, Investigational Trivalent Influenza Vaccine with alternate B strain, No Preservative, Quadrivalent Influenza Vaccine, No Preservative
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months to 8 Years
Enrollment
4,363 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
67
States / cities
Dothan, Alabama • Chandler, Arizona • Mesa, Arizona + 55 more
Source: ClinicalTrials.gov public record
Updated Jul 14, 2015 · Synced Oct 14, 2026, 12:16 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Role of CD4+ Memory Phenotype, Memory, and Effector T Cells in Vaccination and Infection

NCT03453801
View directory record Official record
Conditions
Influenza, Healthy
Interventions
Fluzone®, FluMist®
Biological
Lead sponsor
Stanford University
Other
Eligibility
6 Months to 10 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 13, 2020 · Synced Oct 14, 2026, 12:16 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Immunogenicity of GSK Biologicals' Seasonal Influenza Vaccine in Children

NCT01198756
View directory record Official record
Conditions
Influenza
Interventions
Quadrivalent seasonal influenza vaccine GSK2282512A, Fluarix™ VB, Fluarix™ YB
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
6 Months to 17 Years
Enrollment
3,109 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
16
States / cities
Chandler, Arizona • Scottsdale, Arizona • Harrisburg, Arkansas + 13 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2018 · Synced Oct 14, 2026, 12:16 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study of Different Formulations of an A/H1N1 Pandemic Vaccine in Healthy Children Aged 6 Months to 9 Years

NCT00952419
View directory record Official record
Conditions
Influenza, Swine-origin A/H1N1 Influenza
Interventions
Monovalent Subvirion A/H1N1 Influenza vaccine, Normal saline solution (placebo)
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months to 9 Years
Enrollment
474 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
20
States / cities
Miami Beach, Florida • Marietta, Georgia • Woodstock, Georgia + 16 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced Oct 14, 2026, 12:16 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 14, 2026, 12:16 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Immunogenicity and Safety of a Cell-derived Influenza Vaccine in Adults Aged >= 18 and <= 64, Plus Revaccination

NCT00889889
View directory record Official record
Conditions
Influenza
Interventions
Cell-Derived Trivalent Subunit Influenza Vaccine, Placebo
Biological
Lead sponsor
Abbott Biologicals
Industry
Eligibility
18 Years to 64 Years
Enrollment
1,270 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
15
States / cities
Jacksonville, Florida • Pembroke Pines, Florida • South Miami, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Oct 25, 2013 · Synced Oct 14, 2026, 12:16 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 14, 2026, 12:16 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Learn About a Combined COVID-19 and Influenza Shot in Healthy Adults

NCT06237049
View directory record Official record
Conditions
Influenza, Human, SARS-CoV-2 Infection, COVID-19
Interventions
BNT162b2 (Omi XBB.1.5)/RIV, BNT162b2 (Omi XBB.1.5), RIV, Normal saline placebo
Biological · Other
Lead sponsor
Pfizer
Industry
Eligibility
50 Years and older
Enrollment
644 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
30
States / cities
Lake Forest, California • Tustin, California • Walnut Creek, California + 22 more
Source: ClinicalTrials.gov public record
Updated Sep 30, 2025 · Synced Oct 14, 2026, 12:16 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Phase IV Trial to Determine the Safety and Immunogenicity of the WHO Formulation of the 2006-2007 Fluzone® Vaccine

NCT00389532
View directory record Official record
Conditions
Influenza
Interventions
Influenza Virus Vaccine (2006-2007 Fluzone® vaccine)
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced Oct 14, 2026, 12:16 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Study of Inactivated, Split-Virion Influenza Vaccine and Standard Fluzone® Vaccine in Adult and Elderly Subjects

NCT00551031
View directory record Official record
Conditions
Influenza, Myxovirus Infection
Interventions
Split, Inactivated, Trivalent Influenza Vaccine (Intradermal Formulation 1), Split, Inactivated, Trivalent Influenza Vaccine (Intradermal Formulation 2), Split, Inactivated, Trivalent Influenza Vaccine (Standard dose), Split, Inactivated, Trivalent Influenza Vaccine (High-dose)
Biological
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
2,098 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
29
States / cities
Alabaster, Alabama • Mobile, Alabama • Chandler, Arizona + 26 more
Source: ClinicalTrials.gov public record
Updated May 16, 2016 · Synced Oct 14, 2026, 12:16 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Flublok or Fluzone With Advax-CpG55.2 or AF03

NCT03945825
View directory record Official record
Conditions
Influenza, Influenza Immunisation
Interventions
AF03, Delta Inulin-CpG55.2, Influenza Virus Quadrivalent Inactivated Vaccine, Quadrivalent Recombinant Seasonal Influenza Vaccine
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
241 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
8
States / cities
Atlanta, Georgia • Iowa City, Iowa • Baltimore, Maryland + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2025 · Synced Oct 14, 2026, 12:16 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Immunogenicity of GSK Biologicals' Seasonal Influenza Vaccine in Adults

NCT01196975
View directory record Official record
Conditions
Influenza
Interventions
Quadrivalent seasonal influenza vaccine GSK2282512A, FluLavalTM-VB, FluLavalTM-YB
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
1,707 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
6
States / cities
Mesa, Arizona • Wichita, Kansas • Elkridge, Maryland + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2018 · Synced Oct 14, 2026, 12:16 AM EDT
Recruiting Phase 3 Interventional

Randomized, Embedded, Multifactorial Adaptive Platform Trial for Community- Acquired Pneumonia

NCT02735707
View directory record Official record
Conditions
Community-acquired Pneumonia, Influenza, COVID-19
Interventions
Ceftriaxone, Moxifloxacin or Levofloxacin, Piperacillin-tazobactam, Ceftaroline, Amoxicillin-clavulanate, Standard course macrolide, Extended course macrolide, No systemic corticosteroid, Fixed-duration Hydrocortisone, Shock-dependent hydrocortisone, Fixed-duration higher dose Hydrocortisone, No antiviral agent for influenza, Five-days oseltamivir, Ten-days oseltamivir, No antiviral agent for COVID-19, Lopinavir / Ritonavir, Hydroxychloroquine, Hydroxychloroquine + lopinavir/ritonavir, Ivermectin, No immune modulation for COVID-19, Interferon beta-1a, Anakinra, Tocilizumab, Sarilumab, Local standard venous thromboprophylaxis, Therapeutic dose anticoagulation, Conventional low dose thromboprophylaxis, Intermediate dose thromboprophylaxis, Continuation of therapeutic dose anticoagulation, No immunoglobulin, Convalescent plasma, Delayed administration of convalescent plasma, No vitamin C, Vitamin C, No antiplatelet, Aspirin, P2Y12 inhibitor, No simvastatin, Simvastatin, Eritoran, Apremilast, Clinician-preferred mechanical ventilation strategy, Protocolised mechanical ventilation strategy, No renin-angiotensin system inhibitor, Angiotensin converting enzyme inhibitor, Angiotensin Receptor Blockers, ARB + DMX-200, No cysteamine, Cysteamine, Fixed-duration dexamethasone, Baloxavir Marboxil, Five-days oseltamivir + baloxavir marboxil, Ten-days oseltamivir + baloxavir marboxil, No endothelial modulator, Imatinib, No Immune Modulator for Influenza, Baricitinib, Nirmatrelvir/ritonavir, Remdesivir, Nirmatrelvir/ritonavir + remdesivir
Drug · Other · Biological + 1 more
Lead sponsor
UMC Utrecht
Other
Eligibility
18 Years and older
Enrollment
20,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2028
U.S. locations
11
States / cities
Jacksonville, Florida • Augusta, Georgia • Chicago, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2024 · Synced Oct 14, 2026, 12:16 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Safety and Immunogenicity of Quadrivalent Influenza mRNA Vaccine MRT5410 in Adult Participants 18 Years of Age and Older

NCT05624606
View directory record Official record
Conditions
Influenza Immunization
Interventions
Quadrivalent Influenza mRNA Vaccine MRT5410, Quadrivalent Recombinant Influenza vaccine RIV4, Quadrivalent Inactivated Influenza Standard Dose QIV-SD, Quadrivalent Inactivated Influenza High Dose QIV-HD
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
682 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
23
States / cities
Huntington Park, California • Long Beach, California • North Hollywood, California + 19 more
Source: ClinicalTrials.gov public record
Updated Mar 18, 2025 · Synced Oct 14, 2026, 12:16 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 14, 2026, 12:16 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Immunogenicity of a Split, Cell-Based, Inactivated, Trivalent Influenza Vaccine in Healthy Adult Subjects

NCT00845429
View directory record Official record
Conditions
Influenza, Orthomyxoviruses, Myxovirus Infection
Interventions
Influenza virus vaccine - cell-based (2007-2008 Formulation), Influenza virus vaccine (2007-2008 Formulation)
Biological
Lead sponsor
Sanofi
Industry
Eligibility
18 Years to 49 Years
Enrollment
729 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
15
States / cities
Hoover, Alabama • Mobile, Alabama • Tucson, Arizona + 12 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2012 · Synced Oct 14, 2026, 12:16 AM 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 14, 2026, 12:16 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of PanBlok Influenza Vaccine in Healthy Adults

NCT01612000
View directory record Official record
Conditions
Influenza
Interventions
PanBlok, rHA adjuvant
Biological
Lead sponsor
Protein Sciences Corporation
Industry
Eligibility
18 Years to 49 Years
Enrollment
341 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
5
States / cities
Omaha, Nebraska • Rochester, New York • Austin, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 25, 2015 · Synced Oct 14, 2026, 12:16 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Study of a Quadrivalent High-Dose Influenza Vaccine and a Moderna COVID-19 Vaccine Administered Either Concomitantly or Singly in Participants 65 Years of Age and Older Previously Vaccinated With a 2-dose Schedule of Moderna COVID-19 Vaccine

NCT04969276
View directory record Official record
Conditions
Influenza Immunization, Healthy Volunteers
Interventions
Quadrivalent Inactivated Influenza High Dose, COVID-19 mRNA Vaccine (nucleoside modified)
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
65 Years and older
Enrollment
306 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
6
States / cities
Glendale, Arizona • San Diego, California • Vista, California + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 12, 2025 · Synced Oct 14, 2026, 12:16 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety of Simultaneous mRNA COVID-19 Vaccine With Other Childhood Vaccines in Young Children

NCT06038617
View directory record Official record
Conditions
Fever After Vaccination, Fever, Seizures Fever
Interventions
mRNA COVID-19 Vaccine, Routine Childhood Vaccinations
Biological
Lead sponsor
Duke University
Other
Eligibility
6 Months to 4 Years
Enrollment
347 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
5
States / cities
Oakland, California • Atlanta, Georgia • New York, New York + 2 more
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Oct 14, 2026, 12:16 AM EDT
Completed Phase 3 Interventional Results available

A Study of an Ad26.RSV.preF-based Vaccine and High-dose Seasonal Influenza Vaccine, With and Without Coadministration, in Adults Aged 65 Years and Older

NCT05071313
View directory record Official record
Conditions
Influenza, Human Prevention, Respiratory Syncytial Viruses Prevention
Interventions
Ad26.RSV.preF-based vaccine, Quadrivalent High-dose Influenza Vaccine, Placebo
Biological
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
65 Years and older
Enrollment
777 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
19
States / cities
Long Beach, California • Hollywood, Florida • Port Orange, Florida + 14 more
Source: ClinicalTrials.gov public record
Updated May 25, 2025 · Synced Oct 14, 2026, 12:16 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Concomitant Administration of 13-valent Pneumococcal Conjugate Vaccine (13vPnC) With Influenza Vaccine in 23-valent Pneumococcal Polysaccharide (23vPS) Pre-vaccinated Adults.

NCT02124161
View directory record Official record
Conditions
PREVENTION OF INVASIVE PNEUMOCOCCAL DISEASE
Interventions
13-valent pneumococcal conjugate vaccine, Seasonal Inactivated Influenza Vaccine, Placebo
Biological · Other
Lead sponsor
Pfizer
Industry
Eligibility
50 Years and older
Enrollment
882 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
44
States / cities
Birmingham, Alabama • Huntsville, Alabama • Scottsdale, Arizona + 37 more
Source: ClinicalTrials.gov public record
Updated Jul 1, 2016 · Synced Oct 14, 2026, 12:16 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study to Assess the Immunogenicity and Safety of an Investigational Influenza Vaccine in Children

NCT00980005
View directory record Official record
Conditions
Influenza
Interventions
GSK investigational vaccine GSK1557482A, Fluzone®
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
3 Years to 17 Years
Enrollment
2,116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
28
States / cities
Birmingham, Alabama • Benton, Arkansas • Huntington Beach, California + 25 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2018 · Synced Oct 14, 2026, 12:16 AM EDT