Mark Meadows has tested positive for Covid-19, becoming the latest Trump administration official to contract the disease, which has killed over 236,000 Americans.It was not immediately clear how 61-year-old Meadows - who has often appeared at public events without a face mask - was infected.A White House official told Fox News that Meadows was “doing well."Meadows' positive test comes weeks after President Trump and first lady Melania Trump contracted the novel coronavirus and recovered.On Friday, the US set a third straight daily record for new cases, with more than 127,000 infections.The country's raging coronavirus outbreak was a key policy issue in the run-up to the November 3 presidential election, and contributed to a surge in postal.