Independent External Review of EPI-VPD surveillance in Thailand, 1-8 September 2025

Overview

Thailand’s Expanded Programme on Immunization (EPI) and vaccine-preventable disease (VPD) surveillance system underwent a comprehensive external independent review in September 2025, led by the World Health Organization and key partners. This report highlights Thailand’s remarkable achievements—such as sustained polio-free status, elimination of maternal and neonatal tetanus, and high routine immunization coverage—while candidly addressing persistent challenges like subnational coverage gaps, surveillance gaps, risks from cross-border disease importation, and the complexities of decentralization.

The review draws on extensive field visits, stakeholder interviews, and data analysis across seven provinces, offering actionable recommendations to strengthen syndromic surveillance, improve inclusive reporting (especially for migrant and high-risk groups), and enhance programme oversight at all levels. With a focus on equity, resilience, and innovation, this report provides a roadmap for Thailand to sustain immunization gains and respond effectively to emerging public health threats.