So now Cummings is self isolating with symptoms of the coronavirus. He was last seen leaving number 10 just after Johnson made his broadcast saying he had tested positive for the virus.

We don't actually know if they had contact, but it seems extremely likely. Mixing with someone known to have the virus is not exactly a mark of genius, is it?

I suppose like Rees-Mogg, Cummings thinks his common sense means he should not follow expert advice but make his own judgements.

Like Boris, Cummings will probably get through this, as the vast majority do. Whether he will learn anything humility through it is another matter.