Just been doing some reading of some articles that Coronavirus could have already infected half of the UK population from as early as the New Year. Several news outlets reported it towards the end of March, example here: https://www.standard.co.uk/news/health/coronavirus-half-uk-population-oxford-university-study-finds-a4396721.html

I don't want to read too much into it because since these articles popped up there has been no followup whatsoever, that I can find at least. I presume research continues, but IF this is in fact true, it may explain why January was so rough for me, having had two nasty viruses.

Again, take all of this with a pinch of salt. This is a lot of wishful thinking and doesn't explain the sudden rise in deaths if people have been having it since early January, unless it mutated already before being detected. Interpret all this how you wish.