https://thenextweb.com/syndication/2020/05/18/why-the-math-behind-the-uks-covid-alert-levels-makes-no-sense/

During these uncertain times of coronavirus lockdown, we are expected to look towards our leaders for advice and guidance. Critically, the instructions should be as simple and accurate as possible, to ensure that people follow the advice. Unfortunately, on May 10, Prime Minister Boris Johnson’s Twitter account released a number of “infographics” which are, quite frankly, baffling.

At the time of writing, the infographics are still available and no further explanation has been offered. The goal of the infographics was primarily to introduce the idea of the “COVID alert levels,” which go from one (COVID no longer present in the UK) to five (material risk of overwhelming the healthcare system). It’s a nice idea but, unfortunately, it’s practically useless.