“What is the reason for the nursing home infection and spread??”
My theory - pretty much everyone by now is breathing the virus, every day, at least if they interact with multiple people. But our tolerance levels vary greatly, and obviously many of those in a nursing home are about as low as possible. So they get a viral load that would easily get fought off by a healthy but person cannot be fought off by these people. Likewise, lots of healthy doctors get the virus because they’re getting huge viral loads at hospitals, and enough even gets around decent protective gear.
Bob:
It is the vents. The virus loves vents.
Any enclosed space will just keep circulating and recirculating the virus, whether it is an airplane, a ship, a nursing home, a hospital, etc.
In the case of a hospital, the staff puts on all their gear, safely interacts with the patients, then takes off their gear to snack and drink coffee in the lunch room.
They get infected _there_.