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ClinicalTrials.gov public records Last synced Oct 26, 2026, 4:54 AM EDT

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Showing 1–24 of 63 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Vaccine Hesitancy Clear all
Completed No phase listed Observational

HPV Vaccine Hesitancy Among Indiana Youth With Cancer and Blood Diseases

NCT04667702
View directory record Official record
Conditions
Human Papilloma Virus Vaccine Hesitancy
Interventions
Interviews
Behavioral
Lead sponsor
Indiana University
Other
Eligibility
9 Years to 75 Years
Enrollment
176 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated May 8, 2024 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Results available

Precision Vaccine Promotion in Underserved Populations

NCT05537441
View directory record Official record
Conditions
Influenza, Vaccine Hesitancy
Interventions
Text messaging
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
6 Months and older
Enrollment
228,831 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 Oct 1, 2024 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Boosting COVID-19 Vaccination Uptake Using Wastewater Surveillance

NCT06698497
View directory record Official record
Conditions
Vaccine Uptake
Interventions
Communication Campaign
Behavioral
Lead sponsor
Syracuse University
Other
Eligibility
Not listed
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Sep 15, 2025 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Community-Led COVID-19 Testing Intervention to Address Mistrust

NCT07166770
View directory record Official record
Conditions
COVID-19, Trust
Interventions
Community-led discussion
Behavioral
Lead sponsor
Old Dominion University
Other
Eligibility
18 Years and older
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Sep 11, 2026 · Synced Oct 26, 2026, 4:54 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Vaccine Hesitancy in Black/African Americans With Rheumatic Diseases

NCT05822219
View directory record Official record
Conditions
Rheumatic Diseases, COVID-19 Vaccine, COVID-19, SLE
Interventions
COVID-19 vaccine and booster training, and importance
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 85 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 29, 2026 · Synced Oct 26, 2026, 4:54 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

A CHW Intervention to Identify and Decrease Barriers to COVID 19 Testing & Vaccination

NCT05473936
View directory record Official record
Conditions
Vaccine Hesitancy, COVID-19 Testing, Community Health Workers
Interventions
Community Health Worker led curriculum
Behavioral
Lead sponsor
Charles Drew University of Medicine and Science
Other
Eligibility
16 Years and older
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Oct 26, 2026, 4:54 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Group Intervention on Vaccine Confidence

NCT05891626
View directory record Official record
Conditions
Vaccination Refusal
Interventions
Group intervention
Behavioral
Lead sponsor
MultiCare Health System Research Institute
Other
Eligibility
18 Years and older
Enrollment
429 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Puyallup, Washington
Source: ClinicalTrials.gov public record
Updated Oct 10, 2023 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Testing the Persuasiveness of Pro-inoculation Arguments

NCT05804825
View directory record Official record
Conditions
Vaccination Hesitancy, Human Papillomavirus Vaccination, Vaccine Refusal
Interventions
Argument inoculation messages, Simple forewarning message
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
523 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 11, 2023 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Improving Pediatric COVID-19 Vaccine Uptake Using an mHealth Tool

NCT05386355
View directory record Official record
Conditions
COVID-19 Vaccines, Telemedicine, Vaccine Hesitancy, Pediatric ALL
Interventions
COVID-19 Vaccine Uptake App, General Health App
Behavioral · Other
Lead sponsor
IDeA States Pediatric Clinical Trials Network
Network
Eligibility
18 Years and older
Enrollment
1,934 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
15
States / cities
Little Rock, Arkansas • Wilmington, Delaware • Honolulu, Hawaii + 12 more
Source: ClinicalTrials.gov public record
Updated Mar 11, 2025 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Messaging Strategies to Increase Peer Education on COVID-19 Vaccination and Climate Change

NCT05530044
View directory record Official record
Conditions
Vaccine Hesitancy, Climate Change
Interventions
Social diffusion intervention
Behavioral
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 24, 2024 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

COVID-19 Vaccine Education at the Point of Testing to Increase Vaccine Uptake in Vulnerable Communities in SE Louisiana

NCT04939506
View directory record Official record
Conditions
Covid19, Vaccine Refusal, Vaccine Hesitancy
Interventions
COVID-19 Vaccine Education at the Point of COVID-19 Testing
Behavioral
Lead sponsor
Xavier University of Louisiana.
Other
Eligibility
18 Years to 99 Years
Enrollment
377 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Results available

Brief Digital Intervention to Increase COVID-19 Vaccination Among Individuals With Anxiety or Depression

NCT06119854
View directory record Official record
Conditions
Misinformation, Vaccine Hesitancy, Anxiety, Depression, COVID-19
Interventions
Attitudinal inoculation, Cognitive-behavioral therapy-informed intervention, Conventional public health messaging
Behavioral
Lead sponsor
City University of New York, School of Public Health
Other
Eligibility
18 Years and older
Enrollment
1,419 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

CATCH-UP Vaccines: Engaged Approaches to Testing in Community/Healthcare Settings for the Underserved (COVID-19)

NCT05236270
View directory record Official record
Conditions
COVID-19, Vaccine Refusal
Interventions
Text Message, Motivational Interviewing, Electronic Educational Message with Tailored Questions/Prompts
Behavioral
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 100 Years
Enrollment
312 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated May 22, 2024 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Online Games to Help Canadian and U.S. Adults Identify COVID-19 and Vaccine Misinformation: Three Sequential Randomized Studies

NCT07758309
View directory record Official record
Conditions
COVID-19, Vaccine Hesitancy, Health Misinformation, Communication
Interventions
Gamified misinformation refutation quiz, Refutational text (active control)
Behavioral
Lead sponsor
University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
3,637 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Oct 26, 2026, 4:54 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Vaccine Hesitancy: A Survey of Pediatric Clinicians

NCT01098825
View directory record Official record
Conditions
Vaccine Hesitancy, Vaccine Refusal
Interventions
web-based survey
Other
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
Not listed
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 27, 2011 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vaccine Hesitancy Intervention--Provider (VHIP)

NCT01667354
View directory record Official record
Conditions
Childhood Vaccination
Interventions
Academic Detailing
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
Not listed
Enrollment
491 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 13, 2017 · Synced Oct 26, 2026, 4:54 AM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

An Adaptive Prenatal Intervention to Increase Childhood Vaccinations

NCT05795855
View directory record Official record
Conditions
Vaccination Refusal
Interventions
ADEPT
Behavioral
Lead sponsor
Emory University
Other
Eligibility
Female only
Enrollment
770 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 7, 2026 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Community-engaged Optimization of COVID-19 Rapid Evaluation And TEsting Experiences

NCT05894655
View directory record Official record
Conditions
COVID-19, COVID-19 Pandemic
Interventions
COVID-19 walk-up, on-site testing strategy, Community Health Worker (CHW) leading testing navigation and general preventive care reminders, No-cost self-testing kit vending machines
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
Not listed
Enrollment
6,527 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
San Ysidro, California
Source: ClinicalTrials.gov public record
Updated Nov 4, 2025 · Synced Oct 26, 2026, 4:54 AM EDT
Completed No phase listed Observational

Parental Perception of COVID-19 Vaccine in Technology Dependent Patients

NCT05084976
View directory record Official record
Conditions
Chronic Respiratory Failure, Tracheostomy Complication, Mechanical Ventilation Complication
Interventions
COVID 19 vaccine counseling
Behavioral
Lead sponsor
Northwell Health
Other
Eligibility
Up to 21 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Lake Success, New York
Source: ClinicalTrials.gov public record
Updated Jul 18, 2022 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Chatbot Intervention for Reducing HPV Vaccine Hesitancy

NCT05959564
View directory record Official record
Conditions
Cervical Cancer, Anal Cancer, Penile Cancer
Interventions
Personalized Chatbot Intervention, Non-Personalized Chatbot Intervention, No Chatbot Control
Behavioral
Lead sponsor
University of Maryland, College Park
Other
Eligibility
18 Years and older
Enrollment
456 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
College Park, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 21, 2024 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Trusted Messengers: Intervention to Promote COVID-19 Vaccination

NCT04981392
View directory record Official record
Conditions
Covid19, Vaccination
Interventions
Primary care text message outreach to unvaccinated patients and resources to support PCPs
Behavioral
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years and older
Enrollment
21,844 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 26, 2024 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Addressing Vaccine Hesitancy and Increasing COVID-19 Vaccine Uptake Among African American Young Adults in the South

NCT05490329
View directory record Official record
Conditions
COVID-19, Vaccine Uptake
Interventions
Tough Talks COVID
Behavioral
Lead sponsor
Florida State University
Other
Eligibility
18 Years to 29 Years
Enrollment
360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Mar 28, 2025 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Results available

Improving COVID-19 Vaccine Uptake Among Black and Latino Youth

NCT05293392
View directory record Official record
Conditions
COVID-19
Interventions
Culturally-Tailored COVID-19 Vaccine Uptake Intervention, Standard Care
Behavioral
Lead sponsor
Nemours Children's Health System
Other
Eligibility
Not listed
Enrollment
5,792 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Wilmington, Delaware
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced Oct 26, 2026, 4:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

COVIDVaxStories: Randomized Trial to Reduce COVID-19 Vaccine Hesitancy in Populations of Color

NCT06297876
View directory record Official record
Conditions
Vaccine Hesitancy
Interventions
Storytelling, Learn More (Active Comparator)
Behavioral
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years to 105 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 4, 2024 · Synced Oct 26, 2026, 4:54 AM EDT