The Chinese mainland reported 52 new confirmed COVID-19 cases on Thursday, 36 locally transmitted and 16 imported, the National Health Commission said on Friday.

Workers conduct disinfection on a train in preparation for the upcoming Spring Festival travel rush, in Changchun, northeast China's Jilin Province, Jan. 27, 2021. (Photo: Xinhua)

Of local cases, 21 were detected in Heilongjiang, 13 in Jilin, and one each in Beijing and Hebei.

Of new imported cases, nine were detected in Shanghai, five in Guangdong, and one each in Tianjin and Hunan, the National Health Commission said in its daily report.

A total of 82,940 cases had been discharged from hospitals after recovery while 1,802 remained hospitalized, including 99 in severe conditions, the commission said.