It was based on a review of evidence from Hong Kong that suggested widespread utilization of custom face mask could possibly have reduced the spread.
Public Health England (PHE) published a survey on Sunday which found there are 67 single confirmed cases, four “co-primary cases” (two or more linked cases) and 30 outbreaks of coronavirus in schools during June.
A TGA-approved mask will likely be waterproof. But not all other masks are. So, you can test a non-approved surgical mask or cloth mask in the home.