here is a copy/past of my poste from the other thread:
So using that data and the
CDC surveillance data for cases as well, here is what the hospitalization likelihood looks like per confirmed case for the 2 youngest age groups.

I also threw on the flu hospital rates for similar age ranges from 2017-2018. (i made the assumption that for covid we are detecting roughly 1/4 of the cases so I multiplied to flu hospitalization rate by 4 to make it a fair comparison)
my takeaway from this is that first, the early data likely skews high due to poor case surveillance last summer, and second that it looks like Delta is likely more dangerous to kids than previous versions, maybe as much as 50-100% more dangerous, but a 100% increase in a tiny number is still a small number.