Originally Posted by
trueblu
a) In COVID-19, viral shedding is highest at onset of symptoms, i.e. just before you have symptoms and shortly thereafter. Why is this important? It could be that to radically interrupt transmission, if _everyone_ wears masks, i.e. all well people, that may have major impact. Certainly, this occurred in China, and in East Asia in general. I am coming to the opinion we do need to roll this out in Europe/US but with mask re-use for general public.
Thanks for relating the part about the time of viral shedding. But about the masks, how do they prevent the virus from entering a host through the eyes? Or ears? Asking because I'd like to know.