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 30, 2026, 4:48 PM EDT

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

Showing 1–24 of 265 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Influenza Vaccination Clear all
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Simultaneous mRNA COVID-19 and IIV Vaccination in Pregnancy Study

NCT06503900
View directory record Official record
Conditions
Birth Outcomes, Safety, Adverse Event Following Immunization
Interventions
mRNA COVID-19 vaccine, IIV4 (quadrivalent inactivated influenza vaccine)
Biological
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Female only
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
6
States / cities
Atlanta, Georgia • Boston, Massachusetts • Durham, North Carolina + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Not applicable Interventional Results available

Patient Portal Reminder/Recall for Influenza Vaccination in a Health System- UCLA Portal R/R Influenza RCT 3

NCT04533685
View directory record Official record
Conditions
Influenza, Respiratory Tract Infections
Interventions
Portal Reminders for Influenza Vaccination: Direct scheduling link, Portal Reminders for Influenza Vaccination: No direct scheduling link, Pre-Commitment Prompt, Pre-Appointment flu vaccine reminders
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
4 Months and older
Enrollment
213,773 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 25, 2022 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Revaccination With Subunit Influenza A/Vietnam/1203/2004 (H5N1) Vaccine

NCT00240903
View directory record Official record
Conditions
Influenza
Interventions
Influenza A/Vietnam/1203/2004 (H5N1; sanofi pasteur)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Aug 12, 2011 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Control of Epidemic Influenza Through a School-based Influenza Vaccination Program

NCT00138294
View directory record Official record
Conditions
Influenza
Interventions
live attenuated and inactivated influenza vaccines
Biological
Lead sponsor
Baylor College of Medicine
Other
Eligibility
4 Years to 18 Years
Enrollment
29,255 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1998 – 2010
U.S. locations
2
States / cities
Temple, Texas • Waco, Texas
Source: ClinicalTrials.gov public record
Updated May 19, 2017 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Immune and Hormone Response to Influenza Vaccine

NCT01978262
View directory record Official record
Conditions
Healthy
Interventions
Seasonal Inactivated Influenza Vaccine
Biological
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years to 39 Years · Female only
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 27, 2018 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety/Efficacy Study of Seqirus A/H7N9 IIV With or Without MF59(R) Adjuvant to Prevent Avian Influenza

NCT03682120
View directory record Official record
Conditions
Avian Influenza, Influenza Immunisation
Interventions
A/H7N9, MF59, Phosphate Buffered Saline (PBS) diluent
Biological · Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 64 Years
Enrollment
372 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
7
States / cities
Birmingham, Alabama • St Louis, Missouri • Cincinnati, Ohio + 4 more
Source: ClinicalTrials.gov public record
Updated May 17, 2021 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Prophylactic Antipyretics on Immune Responses and Fever After 2014-2015 and 2015-2016 Inactivated Influenza Vaccine

NCT02212990
View directory record Official record
Conditions
Fever
Interventions
Acetaminophen Arm, Placebo Arm, Ibuprofen Arm
Other
Lead sponsor
Duke University
Other
Eligibility
6 Months to 47 Months
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 7, 2018 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Phase 4 Interventional Results available

Improving Immunogenicity of Influenza Vaccine in HIV Infected Individuals

NCT01262846
View directory record Official record
Conditions
HIV Infection
Interventions
Fluzone®
Biological
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
195 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 13, 2017 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Simultaneous mRNA COVID-19 and IIV4 Vaccination Study

NCT05028361
View directory record Official record
Conditions
Quality of Life, Injection Site Reaction, Adverse Drug Event, Systemic Reaction
Interventions
mRNA COVID-19, IIV4, Placebo (saline)
Biological · Other
Lead sponsor
Duke University
Other
Eligibility
5 Years and older
Enrollment
348 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
3
States / cities
Baltimore, Maryland • Durham, North Carolina • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 19, 2024 · Synced Oct 30, 2026, 4:48 PM EDT
Completed No phase listed Observational

Maternal Immunization: Giving Immunity For Tomorrow

NCT01496079
View directory record Official record
Conditions
Pregnancy, Influenza
Interventions
Not listed
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
166 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 14, 2017 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Influenza Vaccine in Pediatric Transplant Subjects

NCT00133510
View directory record Official record
Conditions
Influenza
Interventions
Trivalent Subviron Influenza vaccine (Fluzone)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Months to 17 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2006
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 27, 2010 · Synced Oct 30, 2026, 4:48 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

SCIVAX: Biomarkers of Immune Dysfunction and Vaccine Responsiveness in Chronic SCI

NCT05869968
View directory record Official record
Conditions
Spinal Cord Injuries, Traumatic Spinal Cord Injury, Healthy Controls, Flu Vaccine, COVID-19 Vaccine
Interventions
Not listed
Lead sponsor
Northwell Health
Other
Eligibility
18 Years to 89 Years
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Manhasset, New York
Source: ClinicalTrials.gov public record
Updated Apr 3, 2026 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Influenza Virus Vaccine Plus Vitamin A and D Supplements for Prevention of Respiratory Virus Infections in Children

NCT02649192
View directory record Official record
Conditions
Healthy Participants
Interventions
Influenza virus vaccine, Vitamins A and D, Placebo
Biological · Dietary Supplement · Other
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
2 Years to 8 Years
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 29, 2019 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Feasibility of Cocooning Immunization Strategy With Influenza Vaccine

NCT00570037
View directory record Official record
Conditions
Influenza
Interventions
Trivalent inactivated influenza vaccine
Biological
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Female only
Enrollment
544 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
2
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 24, 2013 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Increasing Vaccine Uptake Among Veterans at the Atlanta VA Health Care System

NCT03950986
View directory record Official record
Conditions
Influenza, Tetanus, Diphtheria, Pertussis, Pneumonia
Interventions
Modified clinical reminders
Other
Lead sponsor
Atlanta VA Medical Center
Federal
Eligibility
Not listed
Enrollment
67,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 10, 2020 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Immune Response to Vaccination in Patients Receiving Single Drug Immunosuppression

NCT01733056
View directory record Official record
Conditions
Immunosuppression
Interventions
Flu Vaccine
Biological
Lead sponsor
Emory University
Other
Eligibility
18 Years to 89 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 21, 2014 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Inactivated Split Virus Seasonal Influenza Vaccine (Vero Cell-Derived)

NCT01773928
View directory record Official record
Conditions
Influenza
Interventions
Vero cell-derived trivalent influenza vaccine manufactured with the modified manufacturing process (VCIV modified), VCIV manufactured with the current manufacturing process (VCIV current), Fluzone®, licensed trivalent influenza vaccine (TIV)
Biological
Lead sponsor
Alachua Government Services, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,928 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
20
States / cities
Chandler, Arizona • Anaheim, California • Paramount, California + 17 more
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Not applicable Interventional Results available

Patient Portal Flu Vaccine Reminders (5)

NCT05525494
View directory record Official record
Conditions
Influenza, Respiratory Tract Infections
Interventions
Text Fixed R/R Messages with Direct Appointment Schedule Link, Text Pre-Appointment Reminder, Portal Pre-Commitment Prompt with Tailored R/R Messages with Direct Appointment Schedule Link, Portal Fixed R/R Messages with Direct Appointment Schedule Link, Portal Pre-Appointment Reminder
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
6 Months and older
Enrollment
262,085 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 7, 2024 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Phase 1Phase 2 Interventional

FluMist in Egg Allergic Patients

NCT01248208
View directory record Official record
Conditions
Egg Allergy, Eligible for Vaccination Against Influenza
Interventions
FluMist intranasal influenza vaccine, Intramuscular influenza injection ("flu shot")
Biological
Lead sponsor
Walter Reed Army Medical Center
Federal
Eligibility
6 Months and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Oct 3, 2018 · Synced Oct 30, 2026, 4:48 PM 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 30, 2026, 4:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of a Multilevel Intervention on Adult COVID-19 and Influenza Vaccination Rate

NCT06646406
View directory record Official record
Conditions
COVID-19 Immunisation, Influenza Vaccine
Interventions
Patient letter and clinician communication
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
19 Years and older
Enrollment
114,165 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
2
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 5, 2025 · Synced Oct 30, 2026, 4:48 PM 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 30, 2026, 4:48 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Strengthening Intentions

NCT07222774
View directory record Official record
Conditions
Influenza Vaccination, Behavior And Behavior Mechanism
Interventions
Experimental
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
Not listed
Enrollment
350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 30, 2025 · Synced Oct 30, 2026, 4:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

P3+ Intervention Phase

NCT02898688
View directory record Official record
Conditions
Vaccination
Interventions
Control Site, Intervention Site, Patient-level Control Group, Patient-level Intervention Group
Behavioral
Lead sponsor
Emory University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
2,200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
23
States / cities
Aurora, Colorado • Boulder, Colorado • Denver, Colorado + 12 more
Source: ClinicalTrials.gov public record
Updated Aug 5, 2020 · Synced Oct 30, 2026, 4:48 PM EDT