Masks are a key measure to suppress transmission and save lives. Masks reduce potential exposure risk from an infected person whether they have symptoms or not. People wearing masks are protected from getting infected. Masks also prevent onward transmission when worn by a person who is infected.
Masks should be used as part of a comprehensive ‘Do it all!’ approach including: physical distancing, avoiding crowded, closed and close-contact settings, improving ventilation, cleaning hands, covering sneezes and coughs, and more. - WHO