Mr Trump and his wife, First Lady Melania Trump, announced they both tested positive for Covid-19.They were self-isolating at the White House before tonight's announcement, with a White House official previously saying Mr Trump was experiencing 'mild symptoms' and had been injected with an experimental antibody cocktail.Both Democratic presidential nominee Joe Biden and his running mate Kamala Harris have tested negative, their campaign said.Vice President Mike Pence tested negative for the virus on Friday morning and “remains in good health,” his spokesman said.The UK's Prime Minister, Boris Johnson, who was seriously ill with coronavirus in the intensive care unit of St Thomas's Hospital in London in April, sent his best wishes to the.