The Chinese mainland on Thursday reported 3,472 locally transmitted confirmed COVID-19 cases, of which 3,200 were in Shanghai, according to the National Health Commission's report on Friday.
Yesterday also saw 20,694 asymptomatic infections.
Shanghai reported 3,200 locally transmitted COVID-19 cases, 19,872 local asymptomatic infections and one imported asymptomatic patient on Thursday, said the Shanghai Health Commission on Friday morning.
Of all the local infections, 307 confirmed patients were previously asymptomatic infections. Another 2,547 confirmed patients and 19,494 asymptomatic cases were detected during central quarantine, while the rest were found in the screening of high-risk people.