V. interesting hypothesis in @mattwridley piece: what if transmission has been out of control in hospitals and care homes, but pretty low elsewhere? Tragic we didn't shield better. But something close to _current_ measures could see it off http://www.rationaloptimist.com/blog/we-know-everything-and-nothing/ More data needed

But what I don't get in @mattwridley 's article is he starts by saying widespread testing is a good predictor of success in keeping death-toll low. But how does that relate to his point about hospital/care being the burning core of the epidemic? Why would we need wider TTT?