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 etc<p>No 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.<p>Yes, mask may work in some circumstances, but everyone wearing them all the time in social settings? The issue is far from settled.<p>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.<p>Is Austria on a different track when it comes to the epidemic? Not really. Where is the 75x protection?