“Prevalence of Primary Bacterial Co-Infections Among Patients With COVID-19 in Brunei Darussalam: Prevalence of Primary Bacterial Co-Infection in COVID-19”. Western Pacific Surveillance and Response 12, no. 3 (September 8, 2021): 6. Accessed April 4, 2026. https://ojs-dev.wpro.who.int/ojs/index.php/wpsar/article/view/856.