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CompletedNCT06160999TABRIEUpdated Jan 16, 2026

Improving Uptake of Pediatric Vaccines Through Religious Conferences and Vaccines-in-a-van in Aceh, Indonesia

An interventional study of Religious conferences and Vaccine-in-a-van in Vaccination, sponsored by University of Michigan. Completed at 1 site in Indonesia. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-01-16.

Sponsored by University of Michigan · Not applicable, Interventional, and Health services research

Phase
Not applicable
Study type
Interventional
Enrollment
2,400
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The goal of this cluster, randomized controlled trial is to study the impact of mobile vaccine clinics and religious conferences on pediatric vaccination coverage. The main questions will be: does vaccination coverage change in geographic areas with the mobile vaccine clinics vs those areas without mobile vaccine clinics; and does vaccination coverage change in geographic areas with religious conferences on vaccination vs those areas without religious conferences. In repeated surveys, adult participants will respond about their children's vaccination status. Participants will not be individually randomized to the interventions. Rather, their geographical area will be randomized.

Read the detailed description

This project seeks to create a paradigm shift in how the public views and utilizes vaccination services. Currently, community health centers remain the default setting for vaccination, and clinicians the default administrators. However, the general population may have difficulty accessing these clinics or trusting traditional vaccination providers, particularly if they are members of marginalized communities that have experienced medical discrimination. This project applies a two-pronged approach by addressing issues of trust and ease of access among the general population. This project is innovative by: a) mobilizing religious communities to discuss vaccines (to counter reported lack of information about vaccines among unvaccinated families) and b) training more community health workers in vaccination and in physically delivering vaccines through a "Vaccine-in-a-van" concept to facilitate ease in accessing vaccines. By mobilizing these individuals in the community settings where people live, work, worship, and learn, this project will expand vaccine information and services.

More specifically, this project plans to work with local health leaders in a low vaccination community in Aceh, Indonesia to identify social institutions that are part of children and families' daily lives; these could include houses of worship, schools, or community centers. This project will fund a mobile vaccine delivery unit to go to these locations to physically bring vaccines to the people and to link them with existing immunization clinic infrastructure. This project will also work towards changing the culture of child health and vaccination through substantial discussions and conversations with multiple levels of religious leaders at conferences.

02

Conditions studied

  • Vaccination
03

In context

Lead sponsor

University of Michigan is the lead sponsor of 1,475 studies on the registry; 196 are open to participants now.

Of its 162 completed or terminated interventional studies of FDA-regulated products, 128 (79%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Inclusion Criteria:

  • Adults 18+, and
  • Proficient in Bahasa Indonesia, and
  • Plan to live in neighborhood for next year
  • Parent of child \<5, or
  • Planning to have a child within next year
05

Study design

Phase
Not applicable
Primary purpose
Health services research
Allocation
Randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
2,400 participants (actual)

Study arms

  • Experimental
    Religious Conference

    Clusters will have religious conference.

    Behavioral: Religious conferences

  • No intervention
    Religious Conference control

    Clusters will have not religious conference. Clusters' background characteristics matched to the Conference arm.

  • Experimental
    Vaccine-in-a-van

    Clusters will have deployment of a mobile vaccine clinic ("vaccine-in-a-van").

    Behavioral: Vaccine-in-a-van

  • No intervention
    Vaccine-in-a-van control

    Clusters will not have a deployment of a mobile vaccine clinic ("vaccine-in-a-van"). Clusters' background characteristics matched to the Van arm.

Interventions

  • BehavioralReligious conferences

    The conference will invite local subdistrict-level imams and other religious leaders, along with a range of community health workers, including those not traditionally trained to give vaccines. During the conference there will be some sessions with everyone, and some that are broken down by profession. The conference topics will be developed in conjunction with the religious leaders, but will focus on the importance of infant health

  • BehavioralVaccine-in-a-van

    For the vaccine-in-a-van concept, our community health worker will travel to different areas in the test subdistricts. These locations will be decided on in conjunction with the local health department and the research team's knowledge of the area. We will target areas which would have families with young children, particularly: schools, mosques, and sports fields. The purpose of the van will be to bring vaccines to the community, but also to put a human face (our community health worker) to vaccines outside of a clinical setting.

06

What researchers measure

Primary outcomes

  1. Full vaccination

    Number of participants fully vaccinated. Full vaccination means 1 dose of BCG; 3 doses of DTP; 3 doses of polio vaccine; 1 dose of measles-containing vaccine

    Time frame: Records from vaccination cards or clinic records 6 months since the start of the intervention

07

Study locations

1 site
  • Universitas Syiah Kuala
    Banda Aceh, Special Region of Aceh 23111, Indonesia
08

References and documents

Publications

  • Ladhania R, Ichsan I, Koumpias AM, Yufika A, Indah R, Liansyah TM, Wagner AL, Harapan H. Improving uptake of pediatric vaccines through religious conferences and mobile vaccine clinics in Aceh, Indonesia (TABRIE): study protocol for a stepped wedge cluster randomized controlled trial. Trials. 2025 Nov 21;26(1):528. doi: 10.1186/s13063-025-09170-5. PubMed 41272880 ↗

Individual participant data

Plan to share: Yes — Reproducibility and replicability of studies are both extremely important. Therefore, we plan to upload a final dataset (along with code detailing my statistical analysis) to a public repository. This dataset will have personally identifiable information removed - and the geographic location will be coded by a number to prevent individuals being able to locate members of the study and identify them.

Supporting information: Study protocol, Analytic code

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 16, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT06160999
Lead sponsor
University of Michigan
Responsible party
Abram Wagner (Assistant Professor of Epidemiology and Research Assistant Professor, Global Public Health, School of Public Health, University of Michigan) — Principal investigator
First posted
Dec 7, 2023
Start date
Sep 1, 2023
Primary completion
Dec 31, 2025
Completion
Dec 31, 2025
Last update
Jan 16, 2026

Study contacts

Abram Wagner, PhD
principal investigator · University of Michigan

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jan 2026. You cannot join it, but the record below documents what was studied.

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