After U.S. President Donald Trump tested positive for COVID-19, efforts are underway to retrace his steps and find out who he’s been in contact with. Jeff Semple looks at the extraordinary task facing contact tracers, and the fears that Trump could be a coronavirus superspreader.
- Chris Christie says ‘I was wrong’ not to wear mask at White House amid coronavirus
- Here’s the list of people near Trump who have also tested positive for coronavirus