The city reported 1,606 locally transmitted COVID-19 cases, 11,956 local asymptomatic infections and 48 deaths on Tuesday, said the Shanghai Health Commission on Wednesday morning.Of all the local infections, 1,253 confirmed patients were previously asymptomatic infections. Another 340 confirmed patients and 11,798 asymptomatic cases were detected during central quarantine, while the rest were found in the screening of high-risk people.1,606 local casesThe first 340 patients tested positive during central quarantine.