Re: Wear face protection?
Masks reduce transmission. Reduced transmission produces "herd immunity", by weakening the infection and the number of people infected by one existing patient - who is the one who has to wear the mask. If each patient can't infect as many as one other person on average then the next generation of patients is fewer, and fewer, until it dies out. Well, strictly, "herd immunity" refers to achieving that by actual immunity of a sufficient proportion of the population, but we don't have a guarantee of anyone getting lasting immunity from this virus.