"Masks help stop the spread of coronavirus – the science is simple and I’m one of 100 experts urging governors to require public mask-wearing"

So I have read--maybe you have, too--that the point of the masks is to stop asymptomatic but infected folks from spreading the virus. Usually this claim is followed by one that states but the mask you wear won't protect you from getting the virus from someone else.

I didn't understand this. If the mask can prevent the virus from getting out, why couldn't it prevent the virus from getting in?

This piece offers a possible explanation.

"New Nursing Home Data Shows How the COVID-19 Response Has Been Epically Mismanaged"

In case you've missed it we now have a real good idea where a lot of the virus cases are coming from.

See also "Nursing Homes & Assisted Living Facilities Account for 42% of COVID-19 Deaths," "How States Turned Nursing Homes Into ‘Slaughter Houses’ By Forcing Them to Admit Discharged COVID-19 Patients," and "Canada’s nursing home crisis: 81 percent of coronavirus deaths are in long-term care facilities."