Manahan, Karla May S, Alethea R De Guzman, Agnes B Segarra, Ma Nemia Sucaldito, and Rammell Eric C Martinez. “Establishing an Early Warning Surveillance System in Jails in Calabarzon, the Philippines, 2021”. Western Pacific Surveillance and Response 15, no. 2 (June 28, 2024). Accessed April 2, 2025. https://ojs.wpro.who.int/ojs/index.php/wpsar/article/view/1083.