This condition was observed in the UK and had similar symptoms as Kawaskai Disease:
>The cases have in common overlapping features of toxic shock syndrome and atypical Kawasaki Disease with blood parameters consistent with severe COVID-19 in children.
https://www.hsj.co.uk/acute-care/exclusive-national-alert-as...
Quite alarming. Not even all kids' immune systems can deal with SARS-CoV-2.