“There were some cases so everyone potentially exposed is asked to stay home for a couple weeks.”
This is certainly the case.
Is that the right policy?
There is no possible way to reopen schools if anyone in the school who might have been in contact with a (likely asymptomatic) kid who tests positive is forced into weeks of lockdown. It doesn’t work that way with flu; it should not work that way now.
“There were some cases so everyone potentially exposed is asked to stay home for a couple weeks.”
This is certainly the case.
Is that the right policy?
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Good question. Quite debatable.
If they test all for The virus and for antibodies, and if course monitor them for being sick, it would provide a huge amount of data relating to what to expect.