Coronavirus: The Mask Wars – Science Vs
Scientific studies suggest no conclusive evidence that cloth masks help slow the spread of coronavirus. N95 masks are definitely helpful, but we’re not sure whether the same is true for surgical masks, or homemade cloth masks, or bandanas.
I’m going to keep wearing a mask anyway, when I go out in public, because the difficulty is low and potential payoff is high. Also, social signaling matters.