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ClinicalTrials.gov public records Last synced Oct 15, 2026, 4:48 PM EDT

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Showing 361–384 of 1,158 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Influenza Vaccine Clear all
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Comparison of Three Licensed Influenza Vaccines

NCT03068949
View directory record Official record
Conditions
Influenza
Interventions
FluBlok, Fluzone, FluCelVax, Fluzone HD
Biological
Lead sponsor
University of Rochester
Other
Eligibility
18 Years to 49 Years
Enrollment
413 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2021
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Nov 30, 2021 · Synced Oct 15, 2026, 4:48 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Characterizing the Human Airway Immune Response to FluMist Vaccination

NCT07177417
View directory record Official record
Conditions
Healthy Young Adults, Influenza Vaccines, Influenza Vaccine Response
Interventions
FluMist, inactivated influenza vaccine, bronchoscopy
Biological · Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 40 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 17, 2025 · Synced Oct 15, 2026, 4:48 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Study to Evaluate the Effectiveness of FluMist Vaccination in a School-Based Intervention Program

NCT00192218
View directory record Official record
Conditions
Influenza
Interventions
FluMist
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
5 Years to 17 Years
Enrollment
3,022 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2005
U.S. locations
2
States / cities
Baltimore, Maryland • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 22, 2008 · Synced Oct 15, 2026, 4:48 PM EDT
Completed Phase 3 Interventional Results available

Comparing the Efficacy and Safety of High-Titer Versus Low-Titer Anti-Influenza Immune Plasma for the Treatment of Severe Influenza A

NCT02572817
View directory record Official record
Conditions
Influenza A Virus Infection
Interventions
High-titer anti-influenza plasma, Low-titer anti-influenza plasma
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
2 Weeks and older
Enrollment
138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
30
States / cities
Tucson, Arizona • Los Angeles, California • San Diego, California + 23 more
Source: ClinicalTrials.gov public record
Updated Jun 25, 2019 · Synced Oct 15, 2026, 4:48 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Monovalent H5N1 Vaccine GSK1557484A in Children 6 Months to < 18 Years of Age

NCT01310413
View directory record Official record
Conditions
Influenza, Influenza Vaccines
Interventions
Influenza A (H5N1) Virus monovalent vaccine, Saline placebo
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
6 Months to 17 Years
Enrollment
842 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
11
States / cities
Paramount, California • Sacramento, California • Newton, Kansas + 8 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2021 · Synced Oct 15, 2026, 4:48 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Evaluating Modes of Influenza Transmission 2b Baseline SAR

NCT07342556
View directory record Official record
Conditions
Influenza (Healthy Volunteers)
Interventions
Exposure to Donors with naturally acquired influenza virus infection
Other
Lead sponsor
University of Maryland, College Park
Other
Eligibility
18 Years to 49 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
College Park, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Oct 15, 2026, 4:48 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Tolerability of Trivalent Influenza Virus Vaccine in Children Aged 5 Years to < 9 Years

NCT02212106
View directory record Official record
Conditions
Influenza, Human
Interventions
bioCSL Trivalent Influenza Virus Vaccine (CSL TIV), Comparator Quadrivalent Influenza Virus Vaccine
Biological
Lead sponsor
Seqirus
Industry
Eligibility
5 Years to 8 Years
Enrollment
402 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
11
States / cities
Los Angeles, California • Boise, Idaho • St Louis, Missouri + 8 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2015 · Synced Oct 15, 2026, 4:48 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Influenza Vaccination for Parents and Other Caregivers in the Pediatric Medical Home

NCT00812110
View directory record Official record
Conditions
Influenza
Interventions
Influenzae vaccine
Drug
Lead sponsor
Akron Children's Hospital
Other
Eligibility
18 Years and older
Enrollment
336 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Akron, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 23, 2013 · Synced Oct 15, 2026, 4:48 PM EDT
Completed No phase listed Observational Results available

Collection and Testing of Respiratory Samples

NCT01302418
View directory record Official record
Conditions
QIAGEN ResPlex II Advanced Panel, Influenza A, Respiratory Syncytial Virus Infections, Infection Due to Human Parainfluenza Virus 1, Parainfluenza Type 2, Parainfluenza Type 3, Parainfluenza Type 4, Human Metapneumovirus A/B, Rhinovirus, Coxsackie Virus/Echovirus, Adenovirus Types B/C/E, Coronavirus Subtypes 229E, Coronavirus Subtype NL63, Coronavirus Subtype OC43, Coronavirus Subtype HKU1, Human Bocavirus, Artus Influenza A/B RT-PCR Test, Influenza B
Interventions
artus Influenza A/B RT-PCR Test
Device
Lead sponsor
QIAGEN Gaithersburg, Inc
Industry
Eligibility
Not listed
Enrollment
272 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
5
States / cities
Tuscon, Arizona • Albany, New York • Chapel Hill, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated May 10, 2017 · Synced Oct 15, 2026, 4:48 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

H5N1 Vaccine Intramuscular Versus Intradermal in Healthy Adults

NCT00310206
View directory record Official record
Conditions
Influenza
Interventions
Inactivated Influenza A Vaccine A/H5N1
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 3, 2013 · Synced Oct 15, 2026, 4:48 PM EDT
Terminated Phase 1 Interventional

Response to Influenza Vaccine in Patients With Non-Hematologic Malignancies Receiving Chemotherapy

NCT01695733
View directory record Official record
Conditions
Neoplasms
Interventions
trivalent influenza vaccine
Biological
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 31, 2018 · Synced Oct 15, 2026, 4:48 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Immune Response of an H7N7 Vaccine in Healthy Adults

NCT01534468
View directory record Official record
Conditions
Influenza A Subtype H7N7 Infection
Interventions
Monovalent Influenza Subvirion Vaccine, H7N7
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 15, 2015 · Synced Oct 15, 2026, 4:48 PM EDT
Completed No phase listed Observational

"Quidel Reader Influenza A + B Test 510(k) and CLIA Waiver Field Study"

NCT01309568
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
Quidel Corporation
Industry
Eligibility
Not listed
Enrollment
2,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
16
States / cities
Carlsbad, California • Panorama City, California • San Diego, California + 13 more
Source: ClinicalTrials.gov public record
Updated May 12, 2011 · Synced Oct 15, 2026, 4:48 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Two Trivalent Subunit Influenza Vaccines in Healthy Adult Subjects

NCT02256488
View directory record Official record
Conditions
Prophylaxis: Influenza
Interventions
TIVc_LOT A, TIVc_LOT B, TIVc_LOT C, TIVf
Biological
Lead sponsor
Novartis Vaccines
Industry
Eligibility
18 Years to 49 Years
Enrollment
1,561 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
24
States / cities
Anaheim, California • Redding, California • San Diego, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2019 · Synced Oct 15, 2026, 4:48 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 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 15, 2026, 4:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Influenza Vaccination in the Emergency Department

NCT00822627
View directory record Official record
Conditions
Influenza
Interventions
Influenza Vaccination, Education and referral
Drug · Behavioral
Lead sponsor
University of Arizona
Other
Eligibility
6 Months and older
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Jan 14, 2009 · Synced Oct 15, 2026, 4:48 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Body and Social Behavior

NCT05654441
View directory record Official record
Conditions
Psychology, Social, Inflammation, Defeat, Social, Interaction, Social
Interventions
Influenza vaccine, Placebo
Biological
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 35 Years
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
2
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 27, 2024 · Synced Oct 15, 2026, 4:48 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Immunogenicity of Novel H1N1 Vaccination Among HIV-Infected Compared to HIV-Uninfected Persons

NCT00996970
View directory record Official record
Conditions
Influenza, HIV Infections
Interventions
Not listed
Lead sponsor
Henry M. Jackson Foundation for the Advancement of Military Medicine
Other
Eligibility
18 Years to 50 Years
Enrollment
132 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2022
U.S. locations
3
States / cities
San Diego, California • Bethesda, Maryland • Portsmouth, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 22, 2023 · Synced Oct 15, 2026, 4:48 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Immunogenicity of a Quadrivalent Virus-Like Particles (VLP) Influenza Vaccine in Healthy Adults

NCT02768805
View directory record Official record
Conditions
Virus Diseases, RNA Virus Infections, Respiratory Tract Diseases, Respiratory Tract Infections
Interventions
15 µg/strain of Quadrivalent VLP Vaccine, 30 µg/strain of Quadrivalent VLP Vaccine, 15 µg/strain of the licensed quadrivalent vaccine
Biological
Lead sponsor
Medicago
Industry
Eligibility
18 Years to 64 Years
Enrollment
900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
3
States / cities
Hollywood, Florida • South Miami, Florida • Endwell, New York
Source: ClinicalTrials.gov public record
Updated Jun 11, 2020 · Synced Oct 15, 2026, 4:48 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Higher Dose Intradermal H5 Vaccine

NCT00439335
View directory record Official record
Conditions
Influenza
Interventions
Inactivated Influenza A Vaccine A/H5N1, Placebo (IM), Placebo (ID)
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
227 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 9, 2013 · Synced Oct 15, 2026, 4:48 PM EDT
Completed Phase 1Phase 2 Interventional

Lomecel-B on Vaccine-Specific Antibody- Response in Subjects With Aging Frailty

NCT02982915
View directory record Official record
Conditions
Aging Frailty
Interventions
Longeveron Mesenchymal Stem Cells (LMSCs), Fluzone High Dose Vaccine
Biological
Lead sponsor
Longeveron Inc.
Industry
Eligibility
65 Years to 90 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
6
States / cities
Coral Gables, Florida • Fort Myers, Florida • Miami, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2022 · Synced Oct 15, 2026, 4:48 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Immune Defense Protein Impact On Respiratory Immune Outcomes

NCT07431840
View directory record Official record
Conditions
Upper Respiratory Disease, Influenza, Viral Upper Respiratory Infection
Interventions
Immune Defense Protein 50mg Dose, IDP 200mg Dose, Matching Placebo
Dietary Supplement
Lead sponsor
Quantec Ltd
Industry
Eligibility
60 Years and older
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Oct 15, 2026, 4:48 PM EDT
Recruiting Phase 1 Interventional

ACTengine® IMA203 Combined With mRNA-4203

NCT06946225
View directory record Official record
Conditions
Cutaneous Melanoma, Synovial Sarcoma
Interventions
IMA203, mRNA-4203
Biological
Lead sponsor
Immatics US, Inc.
Industry
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
4
States / cities
San Francisco, California • Boston, Massachusetts • New York, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 8, 2026 · Synced Oct 15, 2026, 4:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Comparison of One Versus Two Doses of Influenza Vaccine in Children 5-8 Years of Age

NCT00158665
View directory record Official record
Conditions
Influenza
Interventions
2 0.5 ml doses of '04-05 Trivalent Influenza Vaccine
Biological
Lead sponsor
Kaiser Permanente
Other
Eligibility
5 Years to 8 Years
Enrollment
280 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 13, 2017 · Synced Oct 15, 2026, 4:48 PM EDT