Development of an Immunization Program Model in Armed Conflict Areas in Papua: A Systematic Literature Review

Abstract

Immunization programs in armed conflict areas face complex challenges related to logistics, security, and socio-cultural barriers. In Papua, Indonesia, the coverage of basic childhood immunization remains below the national average due to geographical isolation, limited infrastructure, and recurring security disruptions. This study aims to develop a contextual immunization program model for conflict-affected regions through a systematic literature review. The review was conducted using PRISMA 2020 guidelines and included peer-reviewed articles from Scopus, PubMed, Web of Science, and ScienceDirect published between 2020 and 2024. Fourteen eligible studies were analyzed thematically to identify key components influencing immunization effectiveness in conflict settings. The findings reveal that vaccine cold-chain management, health worker capacity, community engagement, and intersectoral collaboration are the most critical determinants of program success. Technological innovations such as solar-powered cold chains and digital monitoring systems enhance vaccine integrity in remote areas. In addition, the involvement of community health workers and local leaders increases public trust and vaccine acceptance. Integrating safety protocols and performance-based financing mechanisms also contributes to sustainability and staff motivation. The proposed model emphasizes adaptive logistics, multi-sector coordination, and culturally sensitive strategies to ensure equitable access to immunization in high-risk settings. This review highlights the importance of conflict-responsive health policies and resilient immunization systems that align with the Immunization Agenda 2030. The implementation of this model in Papua could serve as a framework for similar regions facing instability and limited access to healthcare.