1️⃣ Singapore Prime Minister Lee advises everyone to wear mask now even you are feeling okay. "evidence exists that people who show no symptoms can pass the virus to others...Surgical masks are medical devices. They are designed to be fluid resistant and are able to filter bacteria more effectively than reusable masks made of cloth or paper." 

Read more: https://www.straitstimes.com/singapore/health/surgical-masks-being-conserved-for-healthcare-workers-pm

2️⃣ Impact of wearing masks 

Slower growth in countries that enforced preventive measures.
Read more: https://www.google.com.sg/amp/s/amp.ft.com/content/e015e096-6532-11ea-a6cd-df28cc3c6a68

3️⃣ Use the right mask
Read more: https://www.hsa.gov.sg/consumer-safety/articles/guide-to-masks-and-respirators