DONALD TRUMP’S mercifully short and atypical experience of Covid-19 does rather demonstrate that when you have access to the most expensive healthcare system in the world, top-class doctors, whatever drugs they prescribe and urgent need to contest an election, that the only thing to do is blow dry your hair, tuck in your tummy and put a smile on your face.

He was a bit unsteady, with a slight glaze on his scrubbed visage, but the Commander-In-Chief — the one who didn’t actually go to war — put on a brave face. Displaying symptoms suggestive of “steroid euphoria” he appeared ready for a fight. Steroids plus an outsize ego and we have a jet-powered POTUS. For a while, possibly.

The train crash that is the US response to the pandemic is a good demonstration of the role that ideology plays in public policy. A private-insurance-based health system that excludes millions of people from healthcare and puts expensive medical treatment beyond the incomes of millions more inevitably leaves a big space for infections like Covid-19 to spread.