So I’ve been doing some COVID math — the sort that isn’t really good enough to put myself forth as an expert but which I want to write down, in a bloggy fashion. It starts with this: two weeks ago, in a CNN interview, CDC director Rochelle Walensky said that for “every 20 vaccinated people, one or two of them could get a breakthrough infection.” A White House staffer said, “If 10 vaccinated people walk into a room full of... Read more