File photo: CGTN

The Chinese mainland reported 15 new confirmed COVID-19 cases Tuesday, including four locally transmitted and 11 imported cases, the National Health Commission said on Wednesday.

The new locally transmitted case were all detected in Sichuan province, said the commission's daily report.

Six new imported cases were reported in Shanghai, two in Guangdong, one each in Jiangsu, Guangxi and Sichuan respectively, the National Health Commission said in its daily report.

A total of 3,727 imported cases had been discharged from hospitals after recovery while 242 remained hospitalized, including three in severe conditions, the commission said.