The European Union's chief Brexit negotiator Michel Barnier announced today that he has tested positive for COVID 19. Mr. Barnier, a former french foreign minister, said in a video posted on his Twitter account that he was strictly confined to his home.<br />''<br />''The revelation came after the European Union and Britain cancelled this week's post-Brexit trade talks because of the virus outbreak. Officials had been discussing plans for a videoconference instead of face-to-face talks in London. <br />''<br />''<br />''<br />