Oh sure. I think we're interpreting the parent comments differently (i.e., I'm understanding sokoloff's and aflag's comments to be about more general precautionary isolation based on symptomatic illness, not necessarily PCR-confirmed infection like logifail's kid.)
I was not really suggesting kids should be isolated whenever they have any sort of possible symptoms. But if you're diagnosed with some contagious illness, it's probably not a bad idea to try to curb the spread.
> if you're diagnosed with some contagious illness, it's probably not a bad idea to try to curb the spread
This was always true, and we never sent an obviously poorly child to daycare/preschool/school.
I've lost count of the number of times I've picked up one of our kids from daycare/preschool/school before Covid after a phone call along the lines of "your child has spiked a fever/vomited/has had an accident and should probably see a doctor".
Wasn't this typically based on common sense by the parties involved, though?
Sure. If your kid is testing positive for a contagious diseases which killed over 6 million people worldwide and left many with long lasting effects, wouldn't common sense dictate that they should stay at home?
PCR testing, as applied in the current COVID testing protocols, is not an appropriate tool to approximate contagiousness. It reliably tells of prior exposure, that's all.