Hong Kong has tested more than 200 patients and medical staff at a public hospital who were deemed at risk after an elderly stroke victim contracted the coronavirus, with nearly all returning a negative result.The tests came as the city recorded another 28 Covid-19 infections on Sunday, taking the total to 890, with all but five having a history of overseas travel. That is the second-lowest daily total during a week where the figure has climbed as high as 59.But authorities cautioned it was too…
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