Mask-Wearing No Longer a Controversial Issue 

Health officials have acknowledged that there is inadequate evidence to support the notion that medical-grade face masks, including N95, KN95, and FFP2 types, provide protection for vulnerable individuals against COVID-19. The UK Health Security Agency (UKHSA) published a rapid review report investigating whether masks protect those at high risk from the disease but was unable to find any scientific research with “usable data.” The reviewers examined 4,371 studies but found none that explored the effectiveness of N95 and equivalent masks for those at a higher risk of severe illness when used within community settings.