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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Influenza Immunization Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Dose-Escalating Trial Using Vero Cell-culture Derived H5N1 +/- Aluminum in Adults

NCT00382980
View directory record Official record
Conditions
Influenza
Interventions
Aluminum hydroxide, Inactivated Vero cell based whole virus influenza A/H5N1, Placebo
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 40 Years
Enrollment
308 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
5
States / cities
Stanford, California • Torrance, California • Baltimore, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 26, 2010 · Synced Jul 23, 2026, 6:22 AM 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 4, 2019 · Synced Jul 23, 2026, 6:22 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

2017 A/H7N9 IIV Revaccination

NCT03738241
View directory record Official record
Conditions
Avian Influenza, Influenza Immunisation
Interventions
A/H7N9, AS03, Phosphate Buffered Saline (PBS) diluent
Biological · Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
19 Years to 70 Years
Enrollment
304 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
9
States / cities
Atlanta, Georgia • Iowa City, Iowa • Baltimore, Maryland + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2021 · Synced Jul 23, 2026, 6:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Non-integrated Costs Increase Effectiveness of Incentives

NCT03507231
View directory record Official record
Conditions
Control - No Incentive for Flu Vaccine, Direct Incentive, Indirect Incentive
Interventions
Email Message, Incentive for Vaccination, Incentive for completing a short survey
Behavioral
Lead sponsor
Carnegie Mellon University
Other
Eligibility
18 Years to 100 Years
Enrollment
12,531 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 24, 2018 · Synced Jul 23, 2026, 6:22 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Promoting Flu Vaccination Through a Mobile Wellness Program

NCT02908893
View directory record Official record
Conditions
Not Condition-specific
Interventions
In-app and push notification mobile messages
Behavioral
Lead sponsor
Evidation Health
Industry
Eligibility
18 Years to 65 Years
Enrollment
77,983 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Santa Barbara, California
Source: ClinicalTrials.gov public record
Updated Oct 20, 2016 · Synced Jul 23, 2026, 6:22 AM EDT
Completed Not applicable Interventional Results available

PregText: Feasibility of Monitoring Influenza Vaccine Safety in Pregnant Women Using Text Messaging

NCT01974050
View directory record Official record
Conditions
Pregnancy
Interventions
Text message surveillance
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older · Female only
Enrollment
166 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 11, 2018 · Synced Jul 23, 2026, 6:22 AM 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 7, 2020 · Synced Jul 23, 2026, 6:22 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Kaiser Permanente VACCination Improvement With Nudge-based CardiovAscular Targeted Engagement

NCT06571747
View directory record Official record
Conditions
Cardiovascular Diseases, Influenza, Behavior, Social
Interventions
Cardiovascular-Focused Nudge Communication
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years and older
Enrollment
3,668,428 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
2
States / cities
Pleasanton, California • Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 14, 2025 · Synced Jul 23, 2026, 6:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Flu Shot Pre-visit Questionnaire

NCT05508698
View directory record Official record
Conditions
Influenza
Interventions
Precommitment Nudge, Salience
Behavioral
Lead sponsor
Geisinger Clinic
Other
Eligibility
18 Years and older
Enrollment
230,962 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 24, 2023 · Synced Jul 23, 2026, 6:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparative Tests of Flu Vaccination Phone Messages

NCT03332992
View directory record Official record
Conditions
Influenza, Human
Interventions
Viral changes, Protect others, General intentions, Behavioral intentions, Accountability
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
7,206 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 14, 2018 · Synced Jul 23, 2026, 6:22 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

H5N1 Priming and Boosting Strategies

NCT00703053
View directory record Official record
Conditions
Influenza
Interventions
A/Vietnam/1203/04, A/Indonesia/05/05
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
505 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
5
States / cities
Decatur, Georgia • Rochester, Minnesota • St Louis, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 22, 2013 · Synced Jul 23, 2026, 6:22 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 11, 2017 · Synced Jul 23, 2026, 6:22 AM EDT
Completed Not applicable Interventional Results available

TextFluenza: Using Technology To Promote Flu Vaccination In Underserved Maternal And Child Populations

NCT01146912
View directory record Official record
Conditions
Influenza
Interventions
Text Message, automated call
Other
Lead sponsor
Columbia University
Other
Eligibility
6 Months to 50 Years
Enrollment
30,537 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 6, 2015 · Synced Jul 23, 2026, 6:22 AM EDT
Recruiting 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
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 18, 2025 · Synced Jul 23, 2026, 6:22 AM 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 6, 2015 · Synced Jul 23, 2026, 6:22 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Sanofi 2017 H7N9 With/Without AS03 in Adults/Elderly

NCT03312231
View directory record Official record
Conditions
Avian Influenza, Influenza Immunisation
Interventions
AS03, Inactivated influenza H7N9 vaccine, Phosphate Buffered Saline (PBS) diluent
Drug · Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
19 Years to 99 Years
Enrollment
720 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
5
States / cities
Decatur, Georgia • Iowa City, Iowa • Baltimore, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Jul 23, 2026, 6:22 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Effect of Influenza Vaccination on Donor Egg Recipient Outcomes

NCT02946177
View directory record Official record
Conditions
Infertility, Recurrent Miscarriage
Interventions
Influenza Vaccine, Sterile Saline
Biological · Other
Lead sponsor
Center for Human Reproduction
Other
Eligibility
21 Years to 45 Years · Female only
Enrollment
126 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 17, 2020 · Synced Jul 23, 2026, 6:22 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Analysis of Bone Marrow and Blood B Cell Immune Responses to Influenza Vaccination

NCT02485639
View directory record Official record
Conditions
Influenza, Influenza Immunisation
Interventions
Influenza Virus Vaccine Inactivated
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 49 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 23, 2023 · Synced Jul 23, 2026, 6:22 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Increasing COVID-19, Influenza, and Pneumonia Vaccine Uptake

NCT04761692
View directory record Official record
Conditions
Covid19, Influenza, Pneumonia, Vaccine Refusal
Interventions
Full VEPMP Intervention, Partial VEPMP Intervention, Delayed VEPMP Intervention
Behavioral
Lead sponsor
Charles Drew University of Medicine and Science
Other
Eligibility
65 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 18, 2022 · Synced Jul 23, 2026, 6:22 AM EDT
Completed Not applicable Interventional

Text4Vax: Text Message Reminders for Pediatric COVID-19 and Influenza Vaccines 2024-25 Season

NCT06603090
View directory record Official record
Conditions
Influenza, COVID-19, Vaccination Hesitancy
Interventions
Text message influenza vaccine reminders, Text message COVID-19 vaccine reminders, Text message influenza and COVID-19 vaccine reminders
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
6 Months to 17 Years
Enrollment
66,147 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
4
States / cities
Itasca, Illinois • New York, New York • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 10, 2025 · Synced Jul 23, 2026, 6:22 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Effect of Influenza Vaccination on IVF Outcomes - IVF

NCT02947217
View directory record Official record
Conditions
Infertility
Interventions
Influenza Vaccine, Sterile Saline
Biological · Other
Lead sponsor
Center for Human Reproduction
Other
Eligibility
21 Years to 38 Years · Female only
Enrollment
238 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 9, 2022 · Synced Jul 23, 2026, 6:22 AM EDT
Completed Phase 1 Interventional

HIV Vaccine Designed for HIV Infected Adults Taking Anti-HIV Drugs

NCT00056758
View directory record Official record
Conditions
HIV Infections
Interventions
Autologous Dendritic Cell HIV Vaccination
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2003
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 26, 2007 · Synced Jul 23, 2026, 6:22 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Plasmablast Trafficking and Antibody Response in Influenza Vaccination (SLVP021 2011-2014)

NCT02141581
View directory record Official record
Conditions
Influenza
Interventions
Fluzone® (IM), Fluzone® Intradermal (ID), 2011-2012 FluMist®
Biological
Lead sponsor
Stanford University
Other
Eligibility
8 Years to 34 Years
Enrollment
86 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated May 6, 2018 · Synced Jul 23, 2026, 6:22 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study on the Immune Response and Safety of the Shingles Vaccine and the Influenza Vaccine When Either is Given to Healthy Adults at the Same Time or Following a COVID-19 Booster Vaccine

NCT05047770
View directory record Official record
Conditions
Herpes Zoster
Interventions
HZ/su, Flu D-QIV, mRNA-1273
Biological · Combination Product
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
2,013 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
46
States / cities
Tempe, Arizona • Oxnard, California • San Diego, California + 40 more
Source: ClinicalTrials.gov public record
Updated Nov 12, 2023 · Synced Jul 23, 2026, 6:22 AM EDT