I think we'll see large numbers of cases coming out of the Etihad. From a public health perspective, I can't help but think it would have made more sense to make teams play home-away-home in these first three games, (or away-home-away). That way there's a two-week break between home fixtures.
I don't think it's unreasonable to suspect fans have gone to Norwich, caught the virus and then returned a week later vs Arsenal.
I have no facts to back this up. But it seems logical to me anyway.
Still though. We've seen clear evidence it spreads like wildfire at festivals, and we've just had Leeds/Reading this weekend. A close friend's baby has tested positive, yet he is able to continue going to work as he's double vaccinated. We need to return to normality, but there are some policies that come at a price!