Jafri, Faridah, Mardiana Omar, Faridah Kusnin, and Masitah Mohamad. “COVID-19 Outbreak at an Aged-Care Facility in Selangor, Malaysia, March–April 2020”. Western Pacific Surveillance and Response 13, no. 1 (January 25, 2022): 5. Accessed April 26, 2024. https://ojs.wpro.who.int/ojs/index.php/wpsar/article/view/839.