Source for 1/1000000 death risk for children infected by covid-19 delta variant?
If your child is in a risk group, you should be worried, and you should want that child to get vaccinated as soon as possible.
If not, it's extremely irrational to worry about your kid dying of covid because that's in lightning-strike territory.
(That's from the university of Oxford in the UK if you think the URL looks funny.)