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ClinicalTrials.gov public records Last synced Oct 2, 2026, 8:29 AM EDT

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Showing 25–48 of 196 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Influenza Vaccine Response Clear all
Not listed No phase listed Observational

Platelet Immune Responses in Aging and Influenza and Sepsis (INVACS)

NCT03010410
View directory record Official record
Conditions
Sepsis, Influenza
Interventions
Not listed
Lead sponsor
Intermountain Health Care, Inc.
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Murray, Utah
Source: ClinicalTrials.gov public record
Updated Aug 13, 2019 · Synced Oct 2, 2026, 8:29 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Immunologic Response to Influenza Vaccination in Children and Adolescents

NCT03614975
View directory record Official record
Conditions
Influenza, Human, Immune Response
Interventions
Flucelvax inactivated influenza vaccine, Fluzone inactivated influenza vaccine
Biological
Lead sponsor
Richard Zimmerman MD
Other
Eligibility
4 Years to 20 Years
Enrollment
166 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 18, 2020 · Synced Oct 2, 2026, 8:29 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers Results available

Response to Influenza Vaccine During Pregnancy

NCT03888989
View directory record Official record
Conditions
Influenza
Interventions
Quadrivalent inactivated influenza vaccine (IIV)
Biological
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 49 Years · Female only
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 17, 2025 · Synced Oct 2, 2026, 8:29 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Safety and Immune Response of Candidate H1N1 Influenza Vaccine GSK2340274A Following Seasonal Influenza Vaccination in Adults

NCT01059617
View directory record Official record
Conditions
Influenza
Interventions
GSK Biologicals' FluLaval®, Placebo (saline), GSK Biologicals' investigational H1N1 Influenza Vaccine - GSK2340274A, GSK Biologicals' investigational H1N1 Influenza Vaccine - GSK2340273A
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
19 Years to 40 Years
Enrollment
133 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
3
States / cities
Milford, Massachusetts • Salisbury, North Carolina • Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 20, 2018 · Synced Oct 2, 2026, 8:29 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 Jul 10, 2026 · Synced Oct 2, 2026, 8:29 AM EDT
Completed Phase 4 Interventional Results available

Assessing the Use of Certolizumab Pegol in Adult Subjects With Rheumatoid Arthritis on the Antibody Response When Receiving Influenza Virus and Pneumococcal Vaccines

NCT00993668
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Placebo, Certolizumab pegol
Other · Biological
Lead sponsor
UCB Pharma
Industry
Eligibility
18 Years and older
Enrollment
224 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
41
States / cities
Birmingham, Alabama • Huntsville, Alabama • Tuscaloosa, Alabama + 38 more
Source: ClinicalTrials.gov public record
Updated Aug 1, 2018 · Synced Oct 2, 2026, 8:29 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Study to Evaluate the Immune Responses of Trivalent Cold-Adapted Influenza Vaccine (CAIV-T) Compared With (TIV)

NCT00111579
View directory record Official record
Conditions
Influenza
Interventions
CAIV-T, TIV
Biological · Other
Lead sponsor
MedImmune LLC
Industry
Eligibility
6 Months to 36 Months
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
5
States / cities
Layton, Utah • Ogden, Utah • Pleasant Grove, Utah + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 24, 2008 · Synced Oct 2, 2026, 8:29 AM 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 2, 2026, 8:29 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Immune Response to High-Dose vs. Standard Dose Influenza Vaccine

NCT02297542
View directory record Official record
Conditions
Elderly Immune System
Interventions
Flu Vaccine
Biological
Lead sponsor
Health Sciences North Research Institute
Other
Eligibility
20 Years and older
Enrollment
85 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 1, 2018 · Synced Oct 2, 2026, 8:29 AM EDT
Completed No phase listed Observational

Influenza Vaccine in HIV Infection: Immune Response and Effect on Viral Load

NCT00025922
View directory record Official record
Conditions
HIV Infection
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 2, 2026, 8:29 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Immunologic Response to FluMist vs. Flucelvax

NCT03982069
View directory record Official record
Conditions
Influenza, Human, Immune Response
Interventions
FluMist live attenuated influenza vaccine, Flucelvax inactivated influenza vaccine
Biological
Lead sponsor
Richard Zimmerman MD
Other
Eligibility
4 Years to 21 Years
Enrollment
465 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 14, 2021 · Synced Oct 2, 2026, 8:29 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cranberry Supplementation, Viral Defense, Antibody Response to the Flu Shot

NCT04597554
View directory record Official record
Conditions
Nutrition Immunology
Interventions
Cranberry, Placebo
Dietary Supplement
Lead sponsor
Appalachian State University
Other
Eligibility
40 Years to 80 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 21, 2022 · Synced Oct 2, 2026, 8:29 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Acceptability of Fluzone Intradermal Vaccine to Patients and Vaccine Administrators

NCT01716130
View directory record Official record
Conditions
Patient Response to Fluzone ID Vaccine
Interventions
Not listed
Lead sponsor
Touro University, California
Other
Eligibility
18 Years to 64 Years
Enrollment
249 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Vallejo, California
Source: ClinicalTrials.gov public record
Updated Oct 29, 2012 · Synced Oct 2, 2026, 8:29 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Study to Assess the Safety and Immune Response of a Vaccine Against Influenza in Healthy Younger and Older Adults

NCT05823974
View directory record Official record
Conditions
Influenza, Human
Interventions
F2C22C/DL001Z, F2B22A/DL001Z, F2B22B/DL001Z, F2B22C/DL001Z, F2B22D/DL001Z, F2B22E/DL001Z, F2F22A/DL001Z, F2F22B/DL001Z, F2F22C/DL001Z, F2F22D/DL001Z, F2F22E/DL001Z, Control 1, F2F23D/DL001Z-NH, F2F23A/DL001Z-NH, F2F23B/DL001Z-NH, Control 2, F2F23C/DL001Z-NH, Control 3, F2F22F/DL001Z
Biological · Combination Product
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 85 Years
Enrollment
1,275 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
24
States / cities
Hialeah, Florida • Miami, Florida • Chicago, Illinois + 21 more
Source: ClinicalTrials.gov public record
Updated Jul 23, 2025 · Synced Oct 2, 2026, 8:29 AM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Response to Live Attenuated Influenza Vaccine in Tonsillar Tissues and Blood

NCT03884296
View directory record Official record
Conditions
Influenza
Interventions
FluMist
Biological
Lead sponsor
Stanford University
Other
Eligibility
2 Years to 49 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Nov 21, 2023 · Synced Oct 2, 2026, 8:29 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Dissecting Human Immune Responses to Infection With Influenza or SARS-CoV-2

NCT06848309
View directory record Official record
Conditions
Influenza, SARS-CoV-2 (COVID-19) Infection, Immune Response of Host
Interventions
Bronchoscopy
Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 60 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Oct 2, 2026, 8:29 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Early Immune Responses to Inactivated Influenza Vaccine: a Pilot Study

NCT01522248
View directory record Official record
Conditions
Influenza Virus Vaccine
Interventions
Trivalent Inactivated Influenza vaccine
Biological
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 15, 2019 · Synced Oct 2, 2026, 8:29 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Genetic and Environmental Factors in the Response to Influenza Vaccination

NCT03088904
View directory record Official record
Conditions
Influenza, Healthy
Interventions
FluMist® Quadrivalent, Fluzone® Quadrivalent vaccine
Biological
Lead sponsor
Stanford University
Other
Eligibility
12 Years to 49 Years
Enrollment
109 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 13, 2020 · Synced Oct 2, 2026, 8:29 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Adaptive Immune Responses and Repertoire in Influenza Vaccination and Infection (SLVP031)

NCT03028987
View directory record Official record
Conditions
Influenza
Interventions
Fluzone®, FluMist®
Biological
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 49 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Sep 12, 2017 · Synced Oct 2, 2026, 8:29 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 15, 2015 · Synced Oct 2, 2026, 8:29 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Th1 Response to Influenza: Aging and Vaccine Efficacy

NCT00396305
View directory record Official record
Conditions
Influenza
Interventions
Placebo, Trivalent Inactivated Influenza
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
21 Years and older
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Oct 2, 2026, 8:29 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

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

NCT00347672
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H5N1 (6-2) AA ca Recombinant (A/VietNam/1203/2004 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
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 21, 2008 · Synced Oct 2, 2026, 8:29 AM EDT
Completed Phase 2 Interventional Results available

A Study To Assess the Immune Response Following Administration Of Influenza and Pneumococcal Vaccines To Subjects With Rheumatoid Arthritis Receiving CP-690,550 Or Placebo

NCT01359150
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
CP-690,550, placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
223 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
51
States / cities
Gilbert, Arizona • Paradise Valley, Arizona • Jonesboro, Arkansas + 45 more
Source: ClinicalTrials.gov public record
Updated Mar 29, 2013 · Synced Oct 2, 2026, 8:29 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Study of Immune Responses to Influenza Vaccination

NCT03346772
View directory record Official record
Conditions
Influenza Vaccination
Interventions
Influenza vaccination
Biological
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 2, 2026, 8:29 AM EDT