Wuhan mass screening identifies hundreds of asymptomatic cases.

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A mass screening programme of more than 10 million Wuhan residents identified 300 asymptomatic cases, but none were infectious – according to a study involving the University of East Anglia.

The mass testing project took place over two weeks at the end of May – after the city’s stringent lockdown was lifted in April.

The study found no ‘viable’ virus in the asymptomatic cases and the close contacts of these positive asymptomatic cases did not test positive.

But the research team warn that their findings do not show that the virus can’t be passed on by asymptomatic carriers.

Rather, strict non-pharmaceutical interventions such as mask-wearing, hand washing, social distancing and lockdown have helped reduce the virulence of Covid-19.

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Nature Communications. The Study Paper:

nature.com/articles/s41467-...