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Showing 1–24 of 33 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Vaccine Acceptance Clear all
Active, not recruiting Not applicable Interventional

RADx-UP Phase 3D (Oregon Saludable: Juntos Podemos)

NCT05910879
View directory record Official record
Conditions
Health Behavior, Health Care Utilization, Vaccine Hesitancy
Interventions
Self-Affirmation Implementation Intentions (SAII) Intervention, Promotores de Salud (Health Education)
Behavioral
Lead sponsor
University of Oregon
Other
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Dec 5, 2024 · Synced Jul 22, 2026, 2:47 PM EDT
Completed Not applicable Interventional Results available

A Randomized Trial of Vaccine Adherence in Young Injection Drug Users

NCT00244374
View directory record Official record
Conditions
Medication Adherence, Substance Abuse, Intravenous, Risk Behavior, Hepatitis A, Hepatitis B, Hepatitis C
Interventions
Hepatitis A & B vaccine, Outreach, AIC, SEP
Biological · Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
14 Years to 29 Years
Enrollment
546 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 29, 2013 · Synced Jul 22, 2026, 2:47 PM EDT
Completed No phase listed Observational

Acceptance of Human Papillomavirus Vaccination in Postpartum Women

NCT00730704
View directory record Official record
Conditions
Human Papilloma Virus, HPV, Post Partum
Interventions
Not listed
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 26 Years · Female only
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 4, 2012 · Synced Jul 22, 2026, 2:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Culturally Tailored HPV Psychoeducational Multimedia Intervention

NCT06098690
View directory record Official record
Conditions
Health Knowledge, Attitudes, Practice, Vaccine-Preventable Diseases, Intention, Adherence, Patient
Interventions
Culturally Tailored Multimedia Psychoeducational HPV Intervention, General HPV Multimedia Psychoeducational Control Group
Behavioral
Lead sponsor
University of Texas, El Paso
Other
Eligibility
18 Years to 45 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated Jul 19, 2026 · Synced Jul 22, 2026, 2:47 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Brief Interventions to Increase HPV Vaccine Acceptance in School-based Health Centers

NCT01087164
View directory record Official record
Conditions
Human Papillomavirus Infection
Interventions
Compliance, Message sidedness
Behavioral
Lead sponsor
Indiana University
Other
Eligibility
11 Years to 15 Years
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 9, 2014 · Synced Jul 22, 2026, 2:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Video to Promote HPV Vaccination

NCT02196454
View directory record Official record
Conditions
Vaccine Acceptance, Social Acceptance, Acceptance Processes, Health Behavior, Human Papillomavirus
Interventions
Educational Video with Male or Female Narrator
Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
11 Years and older
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
2
States / cities
Flourtown, Pennsylvania • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 31, 2018 · Synced Jul 22, 2026, 2:47 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Assessing Interventions to Increase Tdap Acceptance for Non-birthing Partners in Pregnancy

NCT06135636
View directory record Official record
Conditions
Non-birthing Partner Vaccination in Pregnancy, Tdap - Tetanus, Diphtheria and Acellular Pertussis Vaccination, Vaccine Exposure During Pregnancy
Interventions
Education, Vaccine administration
Behavioral · Biological
Lead sponsor
Women and Infants Hospital of Rhode Island
Other
Eligibility
19 Years to 50 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Jul 22, 2026, 2:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Educational Intervention to Improve Vaccine Acceptance

NCT01385501
View directory record Official record
Conditions
Vaccine Hesitancy
Interventions
Video intervention along with educational hand out
Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 60 Years
Enrollment
155 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
2
States / cities
Franklin, Tennessee • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 2, 2015 · Synced Jul 22, 2026, 2:47 PM 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 22, 2026, 2:47 PM EDT
Recruiting Not applicable Interventional

Addressing Vaccine Acceptance in Carceral Settings Through Community Engagement

NCT05796505
View directory record Official record
Conditions
COVID-19
Interventions
ADVANCE Steering Committee interventions
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
37,122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Schwenksville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 20, 2025 · Synced Jul 22, 2026, 2:47 PM EDT
Completed Not applicable Interventional Results available

Developing and Testing a COVID-19 Vaccination Acceptance Intervention

NCT05027464
View directory record Official record
Conditions
COVID-19 Vaccination
Interventions
Moving to COVID-19 Vaccine Acceptance Intervention
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
338,718 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
2
States / cities
North Little Rock, Arkansas • San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 7, 2024 · Synced Jul 22, 2026, 2:47 PM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers

PREVENT HPV -Related Cancers Trial

NCT07217145
View directory record Official record
Conditions
HPV Vaccination, Uptake Vaccination, Series Completion
Interventions
PREVENT
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
1,455 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Jul 22, 2026, 2:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

PREVENT HPV-Related Cancers - BootCamp Translation

NCT06290206
View directory record Official record
Conditions
HPV Vaccination, Vaccine; Uptake, Vaccination; Series Completion
Interventions
PREVENT - BCT
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 17, 2025 · Synced Jul 22, 2026, 2:47 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Perception, Awareness, and Acceptance of Human Papillomavirus Disease and Vaccine Among Parents of Boys Aged 9 to 18 Years

NCT01197079
View directory record Official record
Conditions
Human Papillomavirus (HPV)
Interventions
Survey
Other
Lead sponsor
Ann & Robert H Lurie Children's Hospital of Chicago
Other
Eligibility
9 Years to 26 Years · Male only
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2016
U.S. locations
7
States / cities
Chicago, Illinois • Evanston, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 27, 2025 · Synced Jul 22, 2026, 2:47 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 20, 2023 · Synced Jul 22, 2026, 2:47 PM EDT
Completed Not applicable Interventional Results available

Effect of Varied Outreach Methods on Appointment Scheduling, Appointment Completion, and Receipt of COVID-19 Vaccination

NCT04904744
View directory record Official record
Conditions
Health Care Utilization, Vaccine Preventable Disease
Interventions
Low tailored message, No message, Low tailored message plus COVID-19 vaccine message
Other
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
12 Years to 17 Years
Enrollment
1,235 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 27, 2024 · Synced Jul 22, 2026, 2:47 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Community and Physician Perspectives Regarding Male Youth Human Papillomavirus (HPV) Disease and Vaccination

NCT02897232
View directory record Official record
Conditions
Papillomavirus Infections, Health Behavior, Attitude of Health Personnel, Human Papilloma Virus, Male
Interventions
Survey
Other
Lead sponsor
Louisiana State University Health Sciences Center Shreveport
Other
Eligibility
18 Years and older
Enrollment
386 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Shreveport, Louisiana
Source: ClinicalTrials.gov public record
Updated Feb 9, 2021 · Synced Jul 22, 2026, 2:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Building Engagement Using Financial Incentives Trial - Colorectal Cancer Screening

NCT06124131
View directory record Official record
Conditions
Health Behavior, Colorectal Cancer, Influenza, COVID-19, Vaccine Hesitancy, Vaccine-Preventable Diseases, Healthcare Patient Acceptance
Interventions
Financial incentive for colorectal cancer screening, Financial incentive for flu shot, Financial incentive for COVID-19 shot
Behavioral
Lead sponsor
Tulane University
Other
Eligibility
45 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated May 3, 2025 · Synced Jul 22, 2026, 2:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

PREVENT Pilot HPV - Related Cancers Trial

NCT06738355
View directory record Official record
Conditions
HPV Vaccination, Uptake Vaccination, Series Completion
Interventions
PREVENT
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
335 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Jul 22, 2026, 2:47 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Hashtag HPV: HPV Vaccine Twitter Education Program

NCT05204030
View directory record Official record
Conditions
Human Papilloma Virus, Vaccine-Preventable Diseases
Interventions
HPV Twitter Education Program - Narrative, HPV Twitter Education Program - Non-Narrative
Other
Lead sponsor
University of Arkansas, Fayetteville
Other
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Fayetteville, Arkansas
Source: ClinicalTrials.gov public record
Updated Jan 29, 2023 · Synced Jul 22, 2026, 2:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Human Papilloma Viruses (HPV) Vaccine Adherence Community Clinic Study

NCT01908517
View directory record Official record
Conditions
Patient Compliance
Interventions
HPV Vaccine Electronic Reminders
Behavioral
Lead sponsor
East Carolina University
Other
Eligibility
9 Years to 17 Years
Enrollment
522 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
2
States / cities
Greenville, North Carolina • Snow Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 24, 2016 · Synced Jul 22, 2026, 2:47 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Health Belief Model Based Intervention to Increase Human Papilloma Virus (HPV) Vaccination Among College Men

NCT01431079
View directory record Official record
Conditions
HPV Vaccine Acceptability
Interventions
HPV vaccine acceptability
Behavioral
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years to 25 Years · Male only
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 3, 2013 · Synced Jul 22, 2026, 2:47 PM EDT
Completed Not applicable Interventional

Pneumonia Vaccine Education Intervention Study

NCT06136832
View directory record Official record
Conditions
Pneumonia, Pneumococcal, Vaccine
Interventions
Pneumococcal Vaccine Education
Behavioral
Lead sponsor
Geisinger Clinic
Other
Eligibility
18 Years to 64 Years
Enrollment
141 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Wilkes-Barre, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 7, 2025 · Synced Jul 22, 2026, 2:47 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Promoting Altruism to Enhance Vaccine Acceptance

NCT04568590
View directory record Official record
Conditions
Vaccine Refusal
Interventions
educational intervention
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
Not listed
Enrollment
510 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 11, 2024 · Synced Jul 22, 2026, 2:47 PM EDT