The city reported eight locally transmitted COVID-19 cases, 150 local asymptomatic infections, 15 imported patients and six imported asymptomatic cases on Wednesday, said the Shanghai Health Commission on Thursday morning.Of all the local infections, one confirmed patient and 69 asymptomatic cases were detected during central quarantine, while the rest were found in the screening of high-risk people.8 local casesThe first patient is a former asymptomatic case who showed symptoms later.