Has it ever been reported whether all or even any of these kids tested positive for SARS-COV-2? That would seem like an important and readily-available bit of information, but I haven’t seen it reported one way or the other.
Hopefully they’re being smart enough to use some of the accurate antibody tests to check these kids along with their peers (classmates, neighbors, friends) to see if everyone with this inflammatory syndrome has even had COVID-19 and also whether those positive test results actually mean anything (i.e. if all their peers test positive also, you have tons of noise in your data).
Now if the kids with the inflammatory syndrome all test positive and most of their local peers test negative, that points to a more likely connection. Stuff like this needs to be thoroughly investigated and either confirmed or debunked quickly since it helps guide decisions from both government and parents. To date, it seemed like kids didn’t have much to fear from COVID-19. It’s a lot less dangerous for them than the flu, for instance (something like 250 times less dangerous). But if complications like this are happening and are caused by SARS-COV-2, we need to figure out how best to respond and quickly.
On the local news here in suburbia MN they did claim that the disease is commonly linked with Covid-19 antibodies, which suggests that the child was exposed, was likely, but not always asymptomatic, but did have it. About a month after exposure (it is believed), the child spikes a fever and complains of body aches and has some signs of inflammation, sometimes a rash. They believe the correlation = caussation and are seeing this pattern with MIS-C diagnoses as of late.
I would imagine so called Covid Toe is related.
This would also help explain the seemingly more deleterious effects of Covid-19 in people who have autoimmune disorders that cause inflammation and where Hydroxychloroquine is also contraindicated (i.e. Ankylosing Spondylitis and psoriasis/psoriatic arthritis).
Unfortunately I belong to the group that has both (or all three if you want to go that far) contraindicated autoimmune disorders mentioned above. I take a biologic and a DMARD, both of which suppress the immune system response, so I might be a little more succeptible to Covid or other complications from it. The flip side is that since my immune system is suppressed, it might actually bode well for me WRT Covid-19 and the potential for immune system hyperactivity (cytokine storm).