HPV Vaccine Communication ECHO for Primary Care Clinics

February 20, 2026 updated by: William Calo, Milton S. Hershey Medical Center

HPV ECHO: Increasing the Adoption of Evidence-based Communication Strategies for HPV Vaccination in Rural Primary Care Practices

The safe, highly-effective human papillomavirus (HPV) vaccine remains underused in the US; only 51% of 13- to 17-year-old girls and boys were up-to-date by 2018. The Announcement Approach Training is effective in increasing HPV vaccine uptake during the clinic visit by training providers to make strong vaccine recommendations and answer parents' common questions. Systems communication like recall notifications also improve vaccination by reducing missed clinical opportunities. Although never tested to support HPV vaccination, the ECHO (Extension for Community Healthcare Outcomes) Model is a proven implementation strategy to promote capacity exchange between health care experts at academic centers and primary care providers at the front line of rural community health care. The trial will test the effectiveness of two ECHO-delivered HPV vaccination communication interventions versus control: HPV ECHO will provide Announcement Approach training, and HPV ECHO+ will provide training plus recall notices to communicate with parents who initially decline vaccination.

Study Overview

Detailed Description

The investigators will recruit 36 primary care clinics (family medicine and pediatric) in Pennsylvania. Eligible clinics will have at least 100 active patients, ages 11-14, in their electronic health record systems. Recruitment will target clinics in Central Pennsylvania, where most counties are designated as rural. Clinics will be randomized to one of three arms: ECHO-delivered HPV vaccine communication training using the Announcement Approach (HPV ECHO); HPV ECHO plus systems follow-up communication for parents who initially decline vaccination (HPV ECHO+); or control. Covariate-constrained randomization will be used to ensure balance among the three arms with respect to clinic size (adolescent patient population), clinic type (academic vs. non-academic), rurality, and historic adolescent HPV vaccination rates.

Study Type

Interventional

Enrollment (Actual)

30

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • Pennsylvania
      • Hershey, Pennsylvania, United States, 17033
        • Penn State College of Medicine

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Description

Clinics in cluster RCT (main study)

Inclusion Criteria:

  • Family medicine or pediatric clinic in Pennsylvania
  • Having at least 100 active patients, ages 11-14.

Exclusion Criteria:

  • Primary care clinic outside Pennsylvania
  • Participated in HPV vaccine communication or quality improvement research either through Penn State or another institution in the last 12 months.

Parents in nested study survey

Inclusion criteria:

  • Parent or guardian of an adolescent ages 11-17
  • Adolescent has not yet started HPV vaccination
  • Adolescent receive primary care at participating clinic

Exclusion criteria:

  • Not the parent or guardian of an adolescent ages 11-17
  • Adolescent already initiated HPV vaccination
  • Adolescent does not receive primary care at participating clinic

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Health Services Research
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: HPV ECHO
Clinics randomly assigned to this arm will receive the intervention via real-time, interactive videoconferencing using Zoom at no cost to participants. The intervention has a curriculum of 10 sessions focused on the evidence-based Announcement Approach. Sessions will be 60 minutes in duration and held every other weekly for 4 months at regularly scheduled times.
Using proven adult learning techniques and interactive video technology, the ECHO Model promotes knowledge exchange between experts or specialists at centers of excellence ("the hub") and primary care providers (the "spokes), typically located in rural settings. Through regular real-time collaborative sessions, the spokes connect with the hub and with other spokes to discuss 1) best practices in care and 2) complex cases managed within their practice.
Other Names:
  • ECHO Model
Train physicians and their clinic staff to make strong HPV vaccine recommendations by using presumptive announcements. If parents show vaccine hesitancy, the Training train physicians a 3-step approach (Connect, Clarify, Counsel) to share effective, evidence-based messages about HPV vaccine.
Experimental: HPV ECHO+
Clinics randomly assigned to this arm will receive the HPV ECHO intervention plus a systems communication strategy to deliver recall notices to parents who initially decline HPV vaccination. This arm includes 12 primary care clinics in Pennsylvania.
Using proven adult learning techniques and interactive video technology, the ECHO Model promotes knowledge exchange between experts or specialists at centers of excellence ("the hub") and primary care providers (the "spokes), typically located in rural settings. Through regular real-time collaborative sessions, the spokes connect with the hub and with other spokes to discuss 1) best practices in care and 2) complex cases managed within their practice.
Other Names:
  • ECHO Model
Train physicians and their clinic staff to make strong HPV vaccine recommendations by using presumptive announcements. If parents show vaccine hesitancy, the Training train physicians a 3-step approach (Connect, Clarify, Counsel) to share effective, evidence-based messages about HPV vaccine.
Notify parents that their child is behind for HPV vaccination. Recall notices will include research-tested messages to specifically address parent concerns. Recall notices will be sent to parents via patient portal or email communication.
No Intervention: Control
Clinics randomly assigned to this arm will receive no ECHO interventions. This arm includes 12 primary care clinics in Pennsylvania.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
HPV Vaccination (≥1 Dose), 11-14 Year Olds at 12 Months
Time Frame: Twelve months
Coverage change from baseline to 12 months in HPV vaccine initiation (≥1 dose), among 11- to 14- year old patients, as measured by clinics' records
Twelve months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
HPV Vaccination (≥1 Dose), 11-14 Year Olds at 3 Months
Time Frame: Three months
Coverage change from baseline to 3 months in HPV vaccine initiation (≥1 dose), among 11- to 14- year old patients, as measured by clinics' records
Three months
HPV Vaccination (≥1 Dose), 11-14 Year Olds at 6 Months
Time Frame: Six months
Coverage change from baseline to 6 months in HPV vaccine initiation (≥1 dose), among 11- to 14- year old patients, as measured by clinics' records
Six months
HPV Vaccination (≥1 Dose), 11-14 Year Olds at 9 Months
Time Frame: Nine months
Coverage change from baseline to 9 months in HPV vaccine initiation (≥1 dose), among 11- to 14- year old patients, as measured by clinics' records
Nine months
HPV Vaccination (Completion), 11-14 Year Olds at 3 Months
Time Frame: Three months
Coverage change from baseline to 3 months in HPV vaccine completion (according to the Advisory Committee on Immunization Practices (ACIP) guidelines), among 11- to 14- year-old patients, as measured by clinics' records
Three months
HPV Vaccination (Completion), 11-14 Year Olds at 6 Months
Time Frame: Six months
Coverage change from baseline to 6 months in HPV vaccine completion (according to the Advisory Committee on Immunization Practices (ACIP) guidelines), among 11- to 14- year-old patients, as measured by clinics' records
Six months
HPV Vaccination (Completion), 11-14 Year Olds at 9 Months
Time Frame: Nine months
Coverage change from baseline to 9 months in HPV vaccine completion (according to the Advisory Committee on Immunization Practices (ACIP) guidelines), among 11- to 14- year-old patients, as measured by clinics' records
Nine months
HPV Vaccination (Completion), 11-14 Year Olds at 12 Months
Time Frame: Twelve months
Coverage change from baseline to 12 months in HPV vaccine completion (according to the Advisory Committee on Immunization Practices (ACIP) guidelines), among 11- to 14- year-old patients, as measured by clinics' records
Twelve months
HPV Vaccination (≥1 Dose), 15-17 Year Olds at 3 Months
Time Frame: Three months
Coverage change from baseline to 3 months in HPV vaccine initiation (≥1 dose), among 15- to 17- year old patients, as measured by clinics' records
Three months
HPV Vaccination (≥1 Dose), 15-17 Year Olds at 6 Months
Time Frame: Six months
Coverage change from baseline to 6 months in HPV vaccine initiation (≥1 dose), among 15- to 17- year old patients, as measured by clinics' records
Six months
HPV Vaccination (≥1 Dose), 15-17 Year Olds at 9 Months
Time Frame: Nine months
Coverage change from baseline to 9 months in HPV vaccine initiation (≥1 dose), among 15- to 17- year old patients, as measured by clinics' records
Nine months
HPV Vaccination (≥1 Dose), 15-17 Year Olds at 12 Months
Time Frame: Twelve months
Coverage change from baseline to 12 months in HPV vaccine initiation (≥1 dose), among 15- to 17- year old patients, as measured by clinics' records
Twelve months
HPV Vaccination (≥1 Dose), 11-14 Year Olds at 12 Months by Sex
Time Frame: Twelve months
Coverage change from baseline to 12 months in HPV vaccine initiation (≥1 dose), among 11- to 14- year old patients by sex, as measured by clinics' records
Twelve months
HPV Vaccination (≥1 Dose), 15-17 Year Olds at 12 Months by Sex
Time Frame: Twelve months
Coverage change from baseline to 12 months in HPV vaccine initiation (≥1 dose), among 15- to 17- year old patients by sex, as measured by clinics' records
Twelve months

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Tetanus, Diphtheria, and Acellular Pertussis (Tdap) Vaccination, 11-14 Year Olds
Time Frame: Twelve months
Coverage change from baseline to 12 months in Tdap vaccination among 11- to 14-year-old patients, as measured by clinics' records
Twelve months
Meningococcal Vaccination (≥1 Dose), 11-14 Year Olds
Time Frame: Twelve months
Coverage change from baseline to 12 months in meningococcal vaccination (≥1 dose), among 11- to 14-year-old patients, as measured by clinics' records
Twelve months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: William A Calo, PhD, JD, MPH, Penn State College of Medicine

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 1, 2021

Primary Completion (Actual)

September 30, 2024

Study Completion (Actual)

April 30, 2025

Study Registration Dates

First Submitted

October 7, 2020

First Submitted That Met QC Criteria

October 7, 2020

First Posted (Actual)

October 14, 2020

Study Record Updates

Last Update Posted (Actual)

February 24, 2026

Last Update Submitted That Met QC Criteria

February 20, 2026

Last Verified

February 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

  • STUDY00015734
  • R37CA253279 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

No raw data will be shared with the general public or other researchers.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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