The president of the United States being airlifted to hospital for emergency treatment after falling ill with a potentially deadly virus – if ever you needed confirmation that nobody is immune to Covid-19, this has to be it.
For months Donald Trump has downplayed the virus that has devastated his country, infecting more than seven million Americans and killing more than 200 000. Yet he steadfastly declined to wear a face mask and held election rallies in stadiums with supporters packed in cheek by jowl.
