Coronavirus: many infections spread by people yet to show symptoms – scientists

Findings mean that isolating people once they start to feel ill is less effective than hoped

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Many coronavirus infections may be spread by people who have recently caught the virus and have not yet begun to show symptoms, scientists have found.

An analysis of infections in Singapore and Tianjin in China revealed that two-thirds and three-quarters of people respectively appear to have caught it from others who were incubating the virus but still symptom-free.