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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.
Severe Acute Respiratory Syndrome (SARS)