In areas with community transmission, WHO advises that medical masks are worn by those over 60 years old or underlying medical conditions where physical distancing is not possible.
Non-medical fabric masks should consist of at least three layers of different materials. Masks are not a replacement for physical distancing, hand hygiene practices, and other strategies to prevent the spread.
Read more here: https://www.who.int/publications/i/item/advice-on-the-use-of-masks-in-the-community-during-home-care-and-in-healthcare-settings-in-the-context-of-the-novel-coronavirus-(2019-ncov)-outbreak
Media Briefing: https://www.who.int/dg/speeches/detail/who-director-general-s-opening-remarks-at-the-media-briefing-on-covid-19—5-june-2020?fbclid=IwAR0m19uos949XdcUPrilqUvkDN8LXHql0-6EvFTpi_V2wP0qZXPTBNVZkYY
Photo by Anna Shvets