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ClinicalTrials.gov public records Last synced Oct 29, 2026, 11:25 AM EDT

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Showing 1–24 of 28 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Vaccine Reminder/Recall Clear all
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 29, 2026, 11:25 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

HPV Multilevel Intervention Strategies Targeting Immunization in Community Settings (HPV MISTICS)

NCT05677360
View directory record Official record
Conditions
Human Papilloma Virus (HPV) Vaccine
Interventions
HPV MISTICS -Provider Level, HPV MISTICS - Parent Level, HPV MISTICS- HPV Vaccine Champion Level
Behavioral
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
148 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Oct 29, 2026 · Synced Oct 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Integrating Primary & Secondary Interventions for Cervical Cancer Prevention in Primary Care Settings

NCT03033550
View directory record Official record
Conditions
HPV-Related Carcinoma
Interventions
brief negotiated mobile application
Behavioral
Lead sponsor
Boston Medical Center
Other
Eligibility
9 Years to 17 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 9, 2018 · Synced Oct 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional

Seasonal Influenza Vaccination Reminders for Children With High-risk Conditions

NCT01431183
View directory record Official record
Conditions
Seasonal Influenza Vaccination
Interventions
Mailed influenza vaccination reminder notice
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
24 Months to 60 Months
Enrollment
3,618 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 9, 2011 · Synced Oct 29, 2026, 11:25 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 5, 2019 · Synced Oct 29, 2026, 11:25 AM 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 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional

Centralized IIS-based Reminder/Recall to Increase Childhood Influenza Vaccination Rates_2nd Trial in Colorado

NCT03246100
View directory record Official record
Conditions
Reminder Systems, Influenza Vaccines
Interventions
Reminders
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
6 Months to 17 Years
Enrollment
25,531 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 24, 2019 · Synced Oct 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional

Pediatric Second Influenza Dose Portal Reminder Recall

NCT04668417
View directory record Official record
Conditions
Influenza, Respiratory Tract Infections
Interventions
Portal Reminders for Second Dose of Influenza Vaccine with Direct Scheduling Link, Portal Reminders for Second Dose of Influenza Vaccine without Direct Scheduling Link
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
6 Months to 36 Months
Enrollment
698 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 May 28, 2021 · Synced Oct 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Adolescent Vaccination Reminder Study

NCT01732315
View directory record Official record
Conditions
Adolescent Vaccination Status
Interventions
Email Notification
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
3,783 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 17, 2015 · Synced Oct 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional

HPV IIS Reminder/Recall- New York State

NCT03057379
View directory record Official record
Conditions
Reminder Systems
Interventions
Vaccine Reminder Recall
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
11 Years to 17 Years
Enrollment
30,616 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 28, 2020 · Synced Oct 29, 2026, 11:25 AM 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 29, 2026, 11:25 AM 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 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

State Immunization Information Systems to Improve HPV Vaccination Rates

NCT02993965
View directory record Official record
Conditions
Vaccine, Human Papiloma Virus Vaccine, HPV Vaccine, Immunization, Health Registry, Adolescent Health, Reproductive Health, Preventive Health Services
Interventions
Vaccine Reminder/Recall
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
11 Years to 17 Years
Enrollment
77,716 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 20, 2020 · Synced Oct 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional Results available

Multilevel Interventions to Enhance Provider Recommendations for HPV Vaccination

NCT03501992
View directory record Official record
Conditions
Papillomavirus Vaccines
Interventions
Current care, Reminder-recall, Audit-and-feedback, Combined reminder-recall and audit-and-feedback
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
11 Years to 12 Years
Enrollment
9,242 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 24, 2024 · Synced Oct 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional

Optimizing Application And Support Of Immunization Information Systems (OASIS)

NCT02010372
View directory record Official record
Conditions
Increase in Use of Immunization Registry, Increase in HPV Vaccination Rate
Interventions
Reminder Recall Report, Audit-Feedback/Immunization Forecasting Reports
Other
Lead sponsor
University of Rochester
Other
Eligibility
Not listed
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Feb 25, 2016 · Synced Oct 29, 2026, 11:25 AM 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 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Testing Multiple Behavioral Science Strategies to Increase Flu-Shot Rates at a Large Retail Pharmacy

NCT04590066
View directory record Official record
Conditions
Influenza, Human
Interventions
Flu shot text messages
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
734,383 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 1, 2021 · Synced Oct 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional

HPV Centralized R/R RCT #2 - New York State

NCT03294551
View directory record Official record
Conditions
Vaccines
Interventions
HPV Vaccine Reminder Recall - Autodialer, HPV Vaccine Reminder Recall - Texting
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
11 Years to 14 Years
Enrollment
37,003 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 27, 2021 · Synced Oct 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Collaborative Efforts to Increase Flu Vaccination

NCT01403649
View directory record Official record
Conditions
Influenza, Collaboration
Interventions
Private/public collaboration to increase flu vaccination, Usual care
Behavioral · Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
6 Months to 18 Years
Enrollment
117,175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2015
U.S. locations
27
States / cities
Aurora, Colorado • Brighton, Colorado • Broomfield, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2015 · Synced Oct 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional

Adolescent Vaccination in the Medical Home: Established and Innovative Strategies

NCT01577979
View directory record Official record
Conditions
Immunization Rate
Interventions
Text Message Reminder/Recall, Parent Preference
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
11 Years to 17 Years
Enrollment
34,581 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 26, 2015 · Synced Oct 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional Results available

Patient Portal Reminder/Recall for Influenza Vaccination in a Health System- RCT 2

NCT04110314
View directory record Official record
Conditions
Influenza, Respiratory Tract Infections
Interventions
Portal Reminders for Influenza Vaccination: Gain-framed, Portal Reminders for Influenza Vaccination: Loss-framed, Pre-commitment prompt
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
4 Months and older
Enrollment
430,636 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 5, 2022 · Synced Oct 29, 2026, 11:25 AM EDT
Completed Not applicable Interventional Results available

Patient Portal - Flu Reminder Recall

NCT03666026
View directory record Official record
Conditions
Influenza, Respiratory Tract Infections, Vaccines
Interventions
1 MyChart R/R, 2 MyChart R/R, 3 MyChart R/R
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
4 Months and older
Enrollment
164,205 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 17, 2021 · Synced Oct 29, 2026, 11:25 AM EDT
Terminated Not applicable Interventional Results available

Patient Portal Flu Vaccine Reminders_RCT 4

NCT05052190
View directory record Official record
Conditions
Influenza, Respiratory Tract Infections
Interventions
Text Message R/R with Direct Appointment Schedule Link, Text Message R/R without Direct Appointment Schedule Link, Text Pre-Appointment Reminder, Portal Message R/R with Direct Appointment Schedule Link, Portal Message R/R without Direct Appointment Schedule Link, Portal Pre-Appointment Reminder
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
6 Months and older
Enrollment
239,567 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 11, 2025 · Synced Oct 29, 2026, 11:25 AM EDT
Not listed Not applicable Interventional

COVID-19 Booster Dose Reminder/Recall for Adolescents

NCT05571657
View directory record Official record
Conditions
COVID-19 Vaccines
Interventions
Reminder/Recall Sent Via Preferred Method of Communication
Behavioral
Lead sponsor
Marshfield Clinic Research Foundation
Other
Eligibility
12 Years to 17 Years
Enrollment
4,304 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Marshfield, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 13, 2022 · Synced Oct 29, 2026, 11:25 AM EDT