The number yesterday was about double the seven-day rolling average. That increase is staggering.
Of course, this does not prove causation. But if, as seems likely, the school holidays caused the tumble in the number of cases (they start school holidays at the end of June in Scotland) then it seems very likely that schools reopening is now causing the new spike.
Term, holiday and closure dates
Monday 16 Aug 2021 – Staff resume, in service day.
Tuesday 17 Aug 2021 – In service day.
Wednesday 18 Aug 2021 – Pupils resume.
Schools going back on 18 Aug causes spike in cases on 19 Aug in a disease that takes a few days to take hold and be tested for.
OK, yes, I’ll believe that.