Richard Boucher, MD, was interviewed for a Newsweek report about a new kind of face mask emerging in South Korea that spurs questions as to how useful it actually is to fight the spread of COVID-19.
The mask, which has been seen on Twitter, covers just the nose and was created as a tool to make eating and drinking in public safer. Some masks are sold as just the nose piece, designed to be worn underneath a regular mask, while others come with a detachable piece of cloth that can cover the mouth as well and can be taken off when eating.