A medical worker performs nucleic acid tests for COVID-19 on a resident in Fuyang. On April 8, 2022, there were more than 270,000 confirmed COVID-19 cases in China, and more than 150,000 asymptomatic COVID-19 cases, with more than 4,000 confirmed COVID-19 cases in Shanghai and more than 20,000 new asymptomatic COVID-19 cases.

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Photo credit: © SOPA Images / Alamy / Afripics
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