The Chinese mainland on Thursday reported 312 confirmed local COVID-19 cases, of which 227 were in Shanghai, the National Health Commission said on Friday.
Yesterday also saw 2,140 local asymptomatic infections.
Shanghai reported 227 locally transmitted COVID-19 cases, 1,869 local asymptomatic infections, two imported asymptomatic infections and two deaths on Thursday, said the Shanghai Health Commission on Friday morning.
Of all the local infections, 167 confirmed patients were previously asymptomatic infections. Another 60 confirmed patients and 1,865 asymptomatic cases were detected during central quarantine.