A Health Security Approach for Improving Immunization Coverage in Indonesia - Routine immunization is a vital public health measure and key component of primary health care that reduces global morbidity and mortality caused by vaccine preventable disease (VPD). However, the COVID-19 pandemic caused significant delays in achieving comprehensive coverage. In recent years, low coverage rates have resulted in outbreaks of measles, diphtheria, and circulating vaccine-derived poliovirus type 2 (cVPDV2) in Indonesia, the focus of this proposal. To better advance the control, elimination, and eradication of VPDs and lower the risk of increased morbidity and mortality among thousands of people, efforts to elevate immunization levels in Indonesia must continue to be prioritized. Indonesia’s Joint External Evaluation (JEE) in 2023 and the planned development of the National Action Plan for Health Security (NAPHS) 2025-2029 will be an excellent opportunity to drive improved outcomes for VPDs across the country. As a current CDC implementer, Health Security Partners (HSP) has developed this proposal in collaboration with Perhimpunan Ahli Epidemiologi Indonesia (PAEI), the Indonesian Epidemiological Association, with careful consideration of the unique country context in Indonesia. This narrative proposes a multi-sectoral approach by building individual, institutional and community capacity to address the diverse barriers affecting the varied populations in Indonesia today.