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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Influenza Vaccine Response Clear all
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Immune Responses to Fluzone® Vaccination

NCT00743275
View directory record Official record
Conditions
Influenza
Interventions
Split, Inactivated, Trivalent Influenza vaccine (Fluzone®)
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated May 15, 2016 · Synced Jun 26, 2026, 8:47 AM EDT
Recruiting Not applicable Interventional

The Effects of Endotracheal Suctioning on Pain and Serum Markers

NCT06692400
View directory record Official record
Conditions
Intensive Care Unit ICU, Intubation, Critical Illness, Mechanical Ventilation, Pain Measurement, Pain, Procedural, Oxidative Stress, Hypoxia, Biomarkers / Blood, Adult, Uric Acid, Sepsis, COVID, Influenza, Pneumonia
Interventions
endotracheal tube suctioning
Procedure
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated May 20, 2025 · Synced Jun 26, 2026, 8:47 AM EDT
Completed Phase 2 Interventional Results available

Safety of and Immune Response to an H1N1 Influenza Virus Vaccine in HIV Infected Children and Youth

NCT00992836
View directory record Official record
Conditions
HIV Infections, H1N1 Influenza Virus
Interventions
Influenza A (H1N1) 2009 monovalent vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
4 Years to 25 Years
Enrollment
155 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
35
States / cities
Birmingham, Alabama • Alhambra, California • La Jolla, California + 25 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Jun 26, 2026, 8:47 AM 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 30, 2018 · Synced Jun 26, 2026, 8:47 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of Immune Responses in Healthy Adults Receiving Live Influenza Virus Vaccines

NCT01674205
View directory record Official record
Conditions
Influenza, Human
Interventions
A/swine/Missouri/4296424/2006 (H2N3) x A/Ann Arbor/6/60 ca (H2N3 MO 2006/AA ca), A/chicken/Hong Kong/G9/97 (H9N2) x A/Ann Arbor/6/60 ca (H9N2 G9/AA ca), 2012-2013 trivalent seasonal live attenuated influenza vaccine (FluMist®), Vaccine placebo (Leibovitz-15 [L-15]), Vaccine placebo (FluMist®)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 42 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 14, 2015 · Synced Jun 26, 2026, 8:47 AM EDT
Completed Not applicable Interventional Results available

Open-Label Influenza Vaccine Evaluation

NCT02872311
View directory record Official record
Conditions
Immune Response
Interventions
High Dose Influenza vaccine, Adjuvanted Influenza vaccine, Standard Dose Influenza vaccine, Recombinant Influenza vaccine
Biological
Lead sponsor
Marshfield Clinic Research Foundation
Other
Eligibility
65 Years to 74 Years
Enrollment
179 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Marshfield, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 9, 2025 · Synced Jun 26, 2026, 8:47 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluating the Safety and Immune Response to an H5N1 Influenza Vaccine in People Who Have Previously Received an H5N1 or H7N3 Influenza Vaccine and in People Who Have Never Received a Live Attenuated Influenza Vaccine

NCT01443663
View directory record Official record
Conditions
H5N1 Influenza
Interventions
H5N1 Vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
22 Years to 54 Years
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 8, 2016 · Synced Jun 26, 2026, 8:47 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Immune Response to Influenza Vaccine in HIV-Infected Individuals

NCT00069914
View directory record Official record
Conditions
HIV Infections
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
165 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jun 26, 2026, 8:47 AM EDT
Active, not recruiting Phase 1 Interventional

A Study on the Safety and Immune Response of Investigational mRNA Seasonal Flu/COVID-19 Combination Vaccine in Adults

NCT07464314
View directory record Official record
Conditions
Influenza, Human+COVID-19
Interventions
Investigational mRNA Seasonal Flu/COVID-19 Combination (Flu/COVm) Vaccine, Licensed Seasonal Influenza Vaccine, Licensed COVID-19 Vaccine
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
65 Years to 85 Years
Enrollment
1,475 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
12
States / cities
Anniston, Alabama • Little Rock, Arkansas • Fair Oaks, California + 9 more
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Jun 26, 2026, 8:47 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Trial to Investigate Immune Responses Elicited by a Liquid Formulation of Influenza Virus Vaccine(CAIV-T)in Healthy Adults Aged 18 to 59 and Healthy Adults Aged 60 Years and Older

NCT00192153
View directory record Official record
Conditions
Influenza
Interventions
CAIV-T or TIV
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
18 Years to 60 Years
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001
U.S. locations
2
States / cities
New Port Richey, Florida • Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Sep 12, 2021 · Synced Jun 26, 2026, 8:47 AM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

A Deep Longitudinal Analysis of Next Generation Influenza Vaccines in Older Adults

NCT05518500
View directory record Official record
Conditions
Aging, Influenza Vaccine, Dendritic Cell, Vaccine Response
Interventions
Flu Vaccine (Year 1), Flu Vaccine (Year 2), Flu Vaccine (Year 3), Flu Vaccine (Year 4)
Biological
Lead sponsor
The Jackson Laboratory
Other
Eligibility
65 Years and older
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Jun 26, 2026, 8:47 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

T and B Cell Response to Avian Flu Vaccine

NCT00337896
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Aug 15, 2013 · Synced Jun 26, 2026, 8:47 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Responses to Influenza Vaccine in Patients With Mitochondrial Disorders (MELAS)

NCT01831934
View directory record Official record
Conditions
MELAS Syndrome
Interventions
Fluzone®
Biological
Lead sponsor
Stanford University
Other
Eligibility
13 Years to 65 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced Jun 26, 2026, 8:47 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

The Immunologic Basis for an Attenuated Immune Response to the Influenza Vaccine After Repeated Annual Vaccination

NCT02876159
View directory record Official record
Conditions
Influenza
Interventions
2016-2017 Influenza Vaccine
Biological
Lead sponsor
Emory University
Other
Eligibility
20 Years to 30 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 11, 2018 · Synced Jun 26, 2026, 8:47 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Influenza HA Ferritin Vaccine, Alone or in Prime-Boost Regimens With an Influenza DNA Vaccine in Healthy Adults

NCT03186781
View directory record Official record
Conditions
Influenza
Interventions
VRC-FLUNPF081-00-VP (HA-F A/Sing), VRC-FLUDNA082-00-VP (DNA A/Sing)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 15, 2021 · Synced Jun 26, 2026, 8:47 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

A Study to Learn About Flu and COVID-19 Vaccine Responses in Healthy People

NCT06683352
View directory record Official record
Conditions
Influenza,Human, COVID-19
Interventions
Investigational Influenza Vaccine, COVID-19 Vaccine, Influenza and COVID Combination Vaccine, Licensed Influenza Vaccine 1, Licensed Influenza Vaccine 2, Placebo
Biological · Combination Product · Other
Lead sponsor
BioNTech SE
Industry
Eligibility
18 Years and older
Enrollment
1,353 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
22
States / cities
Lake Forest, California • San Diego, California • Walnut Creek, California + 17 more
Source: ClinicalTrials.gov public record
Updated Aug 14, 2025 · Synced Jun 26, 2026, 8:47 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Cholecalciferol and Flu Vaccine in Treating Healthy Participants

NCT01561989
View directory record Official record
Conditions
Healthy, no Evidence of Disease
Interventions
cholecalciferol, questionnaire administration, trivalent influenza vaccine
Dietary Supplement · Other · Biological
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years to 64 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Mar 9, 2020 · Synced Jun 26, 2026, 8:47 AM EDT
Active, not recruiting Phase 4 Interventional

Flu Vaccine Responses in the Setting of Melanoma Treatment

NCT03315975
View directory record Official record
Conditions
Viral Vaccines
Interventions
Inactivated influenza vaccine
Biological
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 18, 2025 · Synced Jun 26, 2026, 8:47 AM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Response to Inactivated Influenza Vaccine in Lymph Tissue and Blood

NCT03898973
View directory record Official record
Conditions
Influenza
Interventions
Quadrivalent inactivated influenza vaccine (IIV)
Biological
Lead sponsor
Stanford University
Other
Eligibility
20 Years to 75 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Nov 20, 2023 · Synced Jun 26, 2026, 8:47 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Group Study of the Safety of and Immune Response to a Single Dose of Bird Flu Vaccine (H7N3) in Healthy Adults

NCT00853255
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
Live Influenza A Vaccine H7N3 (6-2) AA ca Recombinant (A/chicken/British Columbia/CN-6/2004 x A/Ann Arbor/6/60 ca)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jan 2, 2013 · Synced Jun 26, 2026, 8:47 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluation of Influenza-Specific Immune Responses in Children and Adults During the 2010-2011 Influenza Season in the U.S.

NCT01262079
View directory record Official record
Conditions
Influenza
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Years and older
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
4
States / cities
Decatur, Georgia • St Louis, Missouri • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 14, 2011 · Synced Jun 26, 2026, 8:47 AM EDT
Completed 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 May 23, 2021 · Synced Jun 26, 2026, 8:47 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Intradermal Influenza Vaccination

NCT06067555
View directory record Official record
Conditions
Vaccine Reaction
Interventions
MicronJet, Fluzone® Quadrivalent, Bacteriostatic Saline
Device · Biological · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 40 Years
Enrollment
249 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 18, 2025 · Synced Jun 26, 2026, 8:47 AM EDT