Switching to an N95 mask gives a 75x boost in Covid protection
Notably the paper that they refer to does not actually count infections it is all 
about meta analysis, and  simulation and particle size etcNo actual controlled evaluation that measured protection against the actual infection has ever found effect remotely as strong as claimed here - and sometimes the opposite is found.Yes, mask may work in some circumstances, but everyone wearing them all the time in social settings? The issue is far from settled.As an example Austria has mandated N95 masks since Summer, people, store clerks take it seriously and actually enforce them. Been there myself and seen/experienced that myself.Is Austria on a different track when it comes to the epidemic? Not really. Where is the 75x protection?