December 28, 2021
Can face masks help prevent the spread of respiratory viruses?
Long before the world knew about Covid, masking was a common practice in many Asian countries.
People in Japan started to wear masks when feeling sick as a courtesy to stop any sneezes from landing on other people. Motorcycle riders in the Philippines and India wear masks to deflect exhausts in heavy traffic. In Taiwan, masks are used during the cold winter months and as a barrier to airborne germs.
The turning point to mask usage, however, was as a result of the deadly SARS outbreak in the early 2000s, post which face masks became a regular sight in Hong Kong, Japan, and other parts of Eastern Asia, and now due to Covid, the rest of the world.
But, how exactly do masks prevent the spread of respiratory viruses?
Results from more than 30 studies from around the world...