Of course things can happen on the track, but they can on the street too. The nice thing about DEs is you can push your car as hard as
you want to. And it's in a much more controlled environment than in the public.
We just had our first DE of the year last mo, including a novice group. Everyone was checked for temperatures before the event began and we had a 100% refund policy if someone didn't feel well and didn't attend. As for the novices, everyone wore a full face helmet, which acted like a face mask. And no one was forced to sign up. It's been almost 5 wks and there have been no reported cases other than permagrin.
Here's a pic from the event. Check out my front tire.