Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 10, 2026, 12:55 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 49–72 of 130 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Immune Response to Influenza Vaccine Clear all
Completed Phase 2 Interventional Results available

Safety of and Immune Response to an H1N1 Influenza Vaccine in HIV Infected Pregnant Women

NCT00992017
View directory record Official record
Conditions
HIV Infections, H1N1 Influenza Virus
Interventions
Influenza A (H1N1) monovalent vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 39 Years · Female only
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
29
States / cities
Alhambra, California • La Jolla, California • Long Beach, California + 22 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2021 · Synced Oct 10, 2026, 12:55 AM EDT
Completed 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
393 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2026
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 5, 2026 · Synced Oct 10, 2026, 12:55 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to a Bird Flu Virus Vaccine (H9N2) in Healthy Adults (Study B)

NCT00380237
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H9N2 (6-2) AA ca Reassortant (A/Chicken/Hong Kong/G9/97 x A/Ann Arbor/6/60 ca)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
20 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 10, 2026, 12:55 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 5, 2021 · Synced Oct 10, 2026, 12:55 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 12, 2018 · Synced Oct 10, 2026, 12:55 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 Children

NCT00192322
View directory record Official record
Conditions
Influenza
Interventions
CAIV-T 10^7, CAIVT 10^5, Placebo, TIV
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
6 Months to 36 Months
Enrollment
173 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001
U.S. locations
2
States / cities
New Port Richey, Florida • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 17, 2012 · Synced Oct 10, 2026, 12:55 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Phase 2 Study to Evaluate Immune Responses of FluMist®

NCT00461981
View directory record Official record
Conditions
Influenza Vaccine
Interventions
TIV, Trivalent Inactivated Influenza Virus Vaccine, FluMist, Influenza Virus Vaccine Live
Biological
Lead sponsor
MedImmune LLC
Industry
Eligibility
12 Months to 35 Months
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
19
States / cities
Jonesboro, Arkansas • Little Rock, Arkansas • Anaheim, California + 16 more
Source: ClinicalTrials.gov public record
Updated Oct 6, 2021 · Synced Oct 10, 2026, 12:55 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of and Immune Response to Recombinant Live-Attenuated Influenza H6N1 Virus Vaccine Vaccine

NCT00734175
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H6N1 Teal HK 97/AA ca recombinant vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2008
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 7, 2009 · Synced Oct 10, 2026, 12:55 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 4, 2008 · Synced Oct 10, 2026, 12:55 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Study Comparing the Immune Response of Fluarix and Fluzone Influenza Vaccines

NCT00197288
View directory record Official record
Conditions
Influenza
Interventions
Influenza
Biological
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
1,847 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
15
States / cities
Clearwater, Florida • Evansville, Indiana • Baltimore, Maryland + 12 more
Source: ClinicalTrials.gov public record
Updated Jan 18, 2017 · Synced Oct 10, 2026, 12:55 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

VRC 309: A Multi-Center, Open-Label, Randomized Phase I Study of an Investigational Influenza DNA Vaccine Followed by 2009/2010 Seasonal Influenza Trivalent Inactivated Vaccine (TIV) Compared to Two Injections of TIV in Adults 45-70 Years

NCT00995982
View directory record Official record
Conditions
Influenza, Human
Interventions
VRC-FLUDNA056-00VP
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
45 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
2
States / cities
Bethesda, Maryland • Annandale, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 10, 2026, 12:55 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Immune Responses to H5N1 Vaccine With and Without AS03 Adjuvant

NCT01578317
View directory record Official record
Conditions
Influenza
Interventions
H5N1 vaccine plus AS03 adjuvant, H5N1 vaccine without adjuvant
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 26, 2019 · Synced Oct 10, 2026, 12:55 AM EDT
Completed Phase 4 Interventional

Randomized Influenza Vaccine Evaluation of Immune Response

NCT03598439
View directory record Official record
Conditions
Influenza
Interventions
Standard IIV4, Recombinant, Cell-culture
Biological
Lead sponsor
Marshfield Clinic Research Foundation
Other
Eligibility
18 Years to 64 Years
Enrollment
366 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Marshfield, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 21, 2025 · Synced Oct 10, 2026, 12:55 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Studying Cell Immune Responses to a Live Flu Vaccine in Healthy Adults

NCT01730144
View directory record Official record
Conditions
Normal Physiology
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 18, 2019 · Synced Oct 10, 2026, 12:55 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety of Lactobacillus Rhamnosus GG Versus Placebo in Elderly Subjects Receiving Live Attenuated Influenza Vaccine

NCT01545349
View directory record Official record
Conditions
Healthy, Influenza
Interventions
Lactobacillus rhamnosus GG ATCC 53103 (LGG), Placebo, Live attenuated influenza vaccine
Biological
Lead sponsor
Patricia L. Hibberd
Other
Eligibility
65 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Oct 10, 2026, 12:55 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 10, 2026, 12:55 AM EDT
Completed Phase 4 Interventional Results available

Randomized Study of Immune Response to Licensed Influenza Vaccines in Children and Adolescents

NCT02250274
View directory record Official record
Conditions
Immune Response to Influenza Vaccine, Influenza A Virus Infection, Influenza B Virus Infection
Interventions
LAIV, IIV
Biological
Lead sponsor
Marshfield Clinic Research Foundation
Other
Eligibility
5 Years to 17 Years
Enrollment
131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Marshfield, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 26, 2018 · Synced Oct 10, 2026, 12:55 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 10, 2026, 12:55 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cell Mediated Immunity in Older Adults

NCT01189123
View directory record Official record
Conditions
Immunity to Influenza Vaccine
Interventions
High dose influenza vaccine Sanofi-Pasteur, fluzone by sanofi pasteur
Biological
Lead sponsor
Vanderbilt University
Other
Eligibility
65 Years and older
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 24, 2014 · Synced Oct 10, 2026, 12:55 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

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

NCT00488046
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H5N1 (6-2) AA ca Recombinant (A/Hong Kong/213/2003 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
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 20, 2007 · Synced Oct 10, 2026, 12:55 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Immune Response to Recombinant Live-Attenuated Influenza H2N2 Virus Vaccine

NCT00722774
View directory record Official record
Conditions
Influenza, Virus Diseases
Interventions
H2N2 1960 AA ca recombinant vaccine
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 10, 2008 · Synced Oct 10, 2026, 12:55 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Atopic Dermatitis Research Network (ADRN) Influenza Vaccine Pilot

NCT01518478
View directory record Official record
Conditions
Atopic Dermatitis
Interventions
Fluzone® Intradermal (Sanofi Pasteur Inc.)
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 1, 2017 · Synced Oct 10, 2026, 12:55 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 10, 2026, 12:55 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 10, 2026, 12:55 AM EDT