Tech entrepreneur Elon Musk says he "most likely" has a "moderate case" of Covid-19 but has been "getting wildly different results from different labs".The boss of Tesla and SpaceX, who is 49, tweeted his symptoms were those of a "minor cold". On Friday he said he had been tested four times, with two positive and two negative results. Mr Musk appeared to play down concerns about the pandemic when it first hit.Covid-19 has now infected nearly 10.9 million people in the US.More than 245,000 peop