A study by scientists from China and the United States found that 14.5 per cent of people discharged from hospital after being treated for Covid-19 later retested positive for infection.According to the researchers, 38 of 262 subjects – all of whom were observed for at least two weeks – retested positive, which was almost identical to the proportion – 14 per cent – found in a study conducted in late February by health authorities in southern China’s Guangdong province.However, research…
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