More COVID-19 parameter estimation

The 2 and now 3-segment piecewise constant approach seems to have worked fairly well but is a bit limited. I’m not really convinced that keeping R fixed for such long period and then allowing a sudden jump is really entirely justifiable, especially now we are talking about a more subtle and piecemeal relaxing of controls.…

The EGU review

Well.. that was a very different EGU! We were supposed to be in Vienna, but that was all cancelled a while back of course. I might have felt sorry for my AirBnB host but despite Austria banning everything they didn’t reply to my communication and refused a refund so when AirBnB eventually (after a lot…

Why can’t the Germans be more like us?

And now for the previous post, in reverse. Germany locked down at about the same time as the UK. Actually probably a couple of days earlier, according to Wikipedia and Flaxman et al. Picking a single date is a bit subjective really, but for the purposes of this post I’ll choose the 21st March. So…

The human cost of delaying lockdown

A while ago, I mentioned that the cost of delaying lockdown by a week was to increase illness and death by a factor of 5, based on the doubling time of 3 days that the virus seemed to have at the start. Human cost of delayed action – a short thread prompted by a tweet…

Snap

A week ago, I blogged the graph on the left. Last night, one of the epidemiological modelling teams advising the Govt published the graph on the right. Billed as “new research”, it has formed the basis of the new Govt guidelines on social distancing to deal with the coronavirus pandemic. Apart from the choice of colours,…

Herd all about it

Here are a few numbers that I’ve been bouncing around my head. The govt’s strategy is clear: they want the disease to spread widely, in order that we as a population may achieve “Herd Imunity”. A simple relationship that has some importance to this blogpost: if the basic reproductive rate is R0, then herd immunity…