The weird thing about Donald Trump’s handling of Covid-19, alongside all the other weird things, is that he has always been a near-pathological germaphobe. He likes fast food, we’ve been told, in part because it is barely touched by human hands; he prefers not to press the lowest button on an elevator; he asks Oval Office visitors to wash their hands in a nearby bathroom; he routinely has a bottle of Purell sanitiser available whenever he has to touch hoi polloi; he lost some real estate deals in the past because he wouldn’t shake hands.