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ClinicalTrials.gov public records Last synced Oct 14, 2026, 6:20 PM EDT

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Showing 241–264 of 350 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: TIV (Fluzone) Influenza Vaccination Clear all
Completed Not applicable Interventional

Adult Influenza Vaccination Text Message Reminders

NCT01942824
View directory record Official record
Conditions
Influenza Vaccination
Interventions
Text Messages
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
7,250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 24, 2014 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Not applicable Interventional

Improving Vaccine Counseling Skills Among Residents Using Educational Modules and Standardized Patient Encounters

NCT06074237
View directory record Official record
Conditions
Vaccine Refusal, Vaccine-Preventable Diseases, Physician-Patient Relations
Interventions
Immersive resident education, Standardized patient (SP) encounter
Other
Lead sponsor
Corewell Health East
Other
Eligibility
18 Years and older
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Testing a Personally Controlled Health Record to Ameliorate Influenza at MIT

NCT00531700
View directory record Official record
Conditions
Influenza
Interventions
Health messaging, Health messages
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
18 Years and older
Enrollment
800 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 1, 2009 · Synced Oct 14, 2026, 6:20 PM EDT
Completed No phase listed Observational

Natural History of Systemic and Nasal Mucosal Immunity After Influenza Vaccination in a Pediatric Population

NCT04963166
View directory record Official record
Conditions
Influenza Immunity
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
2 Years to 17 Years
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Performance Feedback in Health Care

NCT04579614
View directory record Official record
Conditions
Influenza
Interventions
The Impact of Performance Feedback and Variable Goal Setting on Flu Vaccination Success Rates of Providers
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
Not listed
Enrollment
595 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Oct 14, 2026, 6:20 PM EDT
Terminated 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 Aug 28, 2026 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Almonds on Immune Strength and Response to Flu Vaccination in Overweight Older Men and Postmenopausal Women: A Randomized Controlled Study

NCT05031663
View directory record Official record
Conditions
Immune Response, Inflammation
Interventions
Almond group, Control Group
Dietary Supplement
Lead sponsor
Loma Linda University
Other
Eligibility
40 Years to 70 Years
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Dec 9, 2025 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Immunization Delivery in Obstetrics and Gynecology Settings

NCT01565135
View directory record Official record
Conditions
Immunization Status Among Obstetrics and Gynecology Patients
Interventions
Multimodal Vaccine Program
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
15 Years and older · Female only
Enrollment
97,087 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 24, 2019 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Not applicable Interventional Results available

Vaccine Health Literacy Related Text Message Reminders to Increase Receipt of Second Dose of Influenza Vaccine for Young, Low Income, Urban Children

NCT01662583
View directory record Official record
Conditions
Influenza
Interventions
Text Message, Written reminder
Other
Lead sponsor
Columbia University
Other
Eligibility
6 Months to 9 Years
Enrollment
660 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 7, 2015 · Synced Oct 14, 2026, 6:20 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effectiveness of a Vaccination Program in the Community Ob/Gyn Setting

NCT00828555
View directory record Official record
Conditions
Influenza Vaccine, Papillomavirus Infection, Pertussis
Interventions
Vaccination Program
Other
Lead sponsor
Duke University
Other
Eligibility
12 Years to 26 Years · Female only
Enrollment
3,988 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
4
States / cities
Burlington, North Carolina • Durham, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 16, 2012 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Not applicable Interventional

Impact of Influenza Vaccination in Pregnancy Video Education

NCT02151201
View directory record Official record
Conditions
Influenza
Interventions
Influenza vaccination video education, Hand washing video education
Behavioral
Lead sponsor
The Cleveland Clinic
Other
Eligibility
Female only
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 2, 2014 · Synced Oct 14, 2026, 6:20 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Investigating the Effectiveness of a Seasonal Influenza Vaccination Promotion Campaign for Members of a Non-Profit, Community-Based Health Insurance Plan: 2018-2019

NCT03700281
View directory record Official record
Conditions
Influenza, Vaccination
Interventions
Messaging, Incentive
Behavioral
Lead sponsor
The University of Texas Health Science Center at Tyler
Other
Eligibility
18 Years and older
Enrollment
22,584 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Apr 23, 2019 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Not applicable Interventional

Centralized Reminder Recall - Flu RCT2

NCT03294473
View directory record Official record
Conditions
Influenza, Human, Orthomyxoviridae Infections, RNA Virus Infections, Virus Disease, Respiratory Tract Infections, Respiratory Tract Disease, Vaccines, Physiological Effects of Drugs
Interventions
R/R - Autodialers, R/R - Texting, R/R - mailed postcard
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
6 Months to 17 Years
Enrollment
70,190 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 5, 2019 · Synced Oct 14, 2026, 6:20 PM EDT
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 16, 2016 · Synced Oct 14, 2026, 6:20 PM EDT
Completed No phase listed Observational

Pharmacokinetics of Oseltamivir in Newborns and Infants

NCT01388439
View directory record Official record
Conditions
Prematurity of Fetus
Interventions
Oseltamivir
Drug
Lead sponsor
St. Louis Children's Hospital
Other
Eligibility
Up to 6 Months
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 6, 2011 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Not applicable Interventional Results available

Patient Portal Flu Vaccine Reminders_RCT 5 (LADHS)

NCT05535777
View directory record Official record
Conditions
Influenza, Respiratory Tract Infections
Interventions
Enhanced texts with Callback by a Person, Enhanced Bidirectional Texts
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
6 Months and older
Enrollment
246,295 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 11, 2025 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Immunogenicity and Safety of Seqirus Quadrivalent Influenza Vaccine (QIV) in a Pediatric Population 6 Months Through 59 Months of Age.

NCT02914275
View directory record Official record
Conditions
Influenza, Human
Interventions
Seqirus Quadrivalent Inactivated Influenza Vaccine, Comparator Quadrivalent Inactivated Influenza Vaccine
Biological
Lead sponsor
Seqirus
Industry
Eligibility
6 Months to 59 Months
Enrollment
2,250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
39
States / cities
Birmingham, Alabama • Mobile, Alabama • Anaheim, California + 27 more
Source: ClinicalTrials.gov public record
Updated Jan 23, 2019 · Synced Oct 14, 2026, 6:20 PM 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 19, 2025 · Synced Oct 14, 2026, 6:20 PM EDT
Terminated No phase listed Observational

Study of Maternal Hepatitis C Infection and Influenza Vaccination in Pregnancy

NCT00810875
View directory record Official record
Conditions
Hepatitis C
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
Not listed
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 25, 2014 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Annual Study for Collection of Serum Samples in Children and Older Adults Receiving the 2020-2021 Formulations of Fluzone Quadrivalent Vaccine and Fluzone High-Dose Quadrivalent Vaccine, Respectively

NCT04551677
View directory record Official record
Conditions
Influenza Immunization, Healthy Volunteers
Interventions
Fluzone Quadrivalent vaccine, No Preservative (0.5-mL dose), 2020-2021 formulation, Fluzone High-Dose Quadrivalent vaccine (0.7-mL dose), 2020-2021 formulation
Biological
Lead sponsor
Sanofi Pasteur, a Sanofi Company
Industry
Eligibility
6 Months to 84 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
2
States / cities
Bardstown, Kentucky • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Sep 12, 2025 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Strategies for Enhancing Mucosal Immunity to Influenza Vaccine

NCT01385215
View directory record Official record
Conditions
Mucosal Immunity
Interventions
Fluzone
Drug
Lead sponsor
John Sundy
Other
Eligibility
18 Years to 50 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 6, 2012 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Post-Partum Immunization With Live Attenuated Influenza Vaccine (LAIV) or Trivalent Influenza Vaccine (TIV) in Post-Partum Breast Feeding Women

NCT01181323
View directory record Official record
Conditions
Influenza
Interventions
Placebo, Cold-adapted live attenuated influenza virus vaccine, trivalent, Trivalent inactivated influenza vaccine
Other · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years · Female only
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
6
States / cities
Washington D.C., District of Columbia • Atlanta, Georgia • St Louis, Missouri + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 28, 2015 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Increasing Influenza and Tdap Vaccination of Pregnant Women

NCT04444518
View directory record Official record
Conditions
Immunization; Infection, Pregnancy Related
Interventions
VAX-MOM Intervention, Standard of Care
Behavioral
Lead sponsor
University of Rochester
Other
Eligibility
Not listed
Enrollment
12,760 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jan 10, 2025 · Synced Oct 14, 2026, 6:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessment, Feedback, Incentive, Exchange (AFIX OB) A Customizable Quality Improvement Intervention to Increase Maternal Vaccine Uptake

NCT04678271
View directory record Official record
Conditions
Influenza, Whooping Cough
Interventions
AFIX-OB Quality Improvement Package
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
202 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 21, 2023 · Synced Oct 14, 2026, 6:20 PM EDT