The Euros final was over 2 weeks ago, with the shorter incubation time of delta we should be well past any effects from that.
Yes, and that’s one theory why we’ve seen a decline in cases over the past five days or so. Average incubation of what, 4 days for delta?
By specimen date, the recent peak was 15 July. The Euros final was 11 July. It was shortly after the 15th that the really sharp fall started (by the 22nd cases by specimen date had just about halved - there may be some cases not included there yet but not that many).
Such a sharp fall off in cases suggests a major behavioural shift (or more likely shifts).
Such as millions of people not crowding into pubs and living rooms to watch the football while it’s raining outside. Such as better weather (though that seems fanciful without any other measures), such as schools starting to break up (though it feels early for that to be having such a sharp impact but of course schools have been steadily breaking up for a while). Plus class bubbles closing, ‘pingdemic’ (🙄) etc.
So it’s pretty noisy. But In all that, it’s hard to discount the impact of millions of people who were doing something pretty high risk for a couple of weeks suddenly stopping doing that thing, in a timeframe that maps so closely to the peak and rapid decline in cases.