A series of studies of the coronavirus suggest it is infectious for longer periods than pathogens from the same family, such as Sars, presenting added challenges for containing it.Researchers found that on average, people with SARS-CoV-2 – the virus that causes Covid-19, a pneumonia-like disease – can expel or “shed” virus particles from their bodies for a relatively long period of 20 days, spreading it even before symptoms appear.The virus also remains persistent in the faeces of some children…
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