As the coronavirus continues to spread around the world, face masks are in high demand as people look for ways to protect themselves.
But do they really protect most people from contracting the virus?
dr Shunmay Yeung of the London School of Hygiene and Tropical Medicine explained.
Please note: This video was created on March 13, 2020 and was based on recommendations from the World Health Organization and other health groups available at the time.
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