> But outside of a hospital environment the masks provide little protection, especially cloth masks.
My experience of talking to medical professionals is that they consider a number like 50% reduction in infections "very little protection", because they (correctly) would use a mask providing 99% protection or whatever in any situation where real protection was needed. But outside of a hospital setting, epidemiologically, a 50% or even 20% reduction in reproduction number makes a big difference to the overall dynamics of an outbreak.
