The first set of ONS data after schools closed for Christmas has been released and it shows an encouraging drop in the infection rate in primary and secondary school-aged children over the Christmas holidays, despite concerns over Christmas mixing. However, next week's data will be the one that will really show the impact (or not) of Christmas mixing.
Interestingly, it also shows a reasonable drop in the infection rate among 35-49 year olds who are most likely to be parents of school-aged children.
ONS data is based on random sampling so doesn't rely on children being symptomatic or being taken for tests by their parents so is a better reflection of the picture in children than case rates from testing.
The graphs do show worrying increases in infection rates in all groups over December, I'm thinking this is the impact of the new strain.
The data does suggest that if we want to make headway with reducing general infection levels we do unfortunately need schools to be closed for a period. Thought needs to go into where we want the levels to be before re-opening and what extra mitigation measures will be put in place to prevent levels simply shooting up in those age groups again. We also also need to keep an eye on whether primary schools being stuffed with keyworker kids affects the rates in that age group.