Yes but it appears to be increasing in frequency. Question becomes, is it increasing in frequency or is it simply increasing because of the case load expansion?
Good question. I have a theory. Actually a couple. One, the relative health of the kids. That's purely a guess, and I tend to think it's not that.
The other, which I would ne be surprised at is the virus is beginning to act differently, and manifest with some different symptoms. Maybe it's mutating or something. I'm not sure, but it seems different than what's been reported in other countries.