The city reported 245 locally transmitted COVID-19 cases, 4,024 local asymptomatic infections, two imported asymptomatic infections and 12 deaths on Thursday, said the Shanghai Health Commission on Friday morning.Of all the local infections, 181 confirmed patients were previously asymptomatic infections. Another 64 confirmed patients and 4,001 asymptomatic cases were detected during central quarantine.245 local casesThe first 64 patients tested positive during central quarantine.