any half decent medical staff would lock it down for three weeks for the sake of everyone else.
There has to be a split second in there between being supposedly asymptomatic and symptoms erupt. Well, it only takes one little furry twisted colored pipe cleaner from hell to do the trick (admittedly odds would be very low as it has to do with "viral load").
Never gave that much thought to virii and how they replicate themselves and where. They don't do sex and some scientists say they aren't living which doesn't make sense to me.