Australian researchers tested one-, two-, and three-layer masks to determine which are the best to protect against covid-19. The video is courtesy of Thorax magazine.
What is the best mask to avoid covid-19?
2020-07-24T18:19:17.911Z
Australian researchers tested one-, two-, and three-layer masks to determine which are the best to protect against covid-19. The video is courtesy of Thorax magazine.
