The Chinese mainland registered 15 new COVID-19 cases on Wednesday, with 14 being from overseas and one locally transmitted, the National Health Commission announced on Thursday.

The sole local transmission was detected in north China's Tianjin Municipality, said the commission.

A total of six new asymptomatic COVID-19 cases were recorded, all from overseas, while 728 asymptomatic patients remain under medical observation. No COVID-19 related deaths were reported on Wednesday, and 24 patients were discharged from hospitals after recovering.

As of Wednesday, the total confirmed COVID-19 cases reached 86,299, with 4,634 fatalities.

The total confirmed infections in the Hong Kong and Macao special administrative regions and the Taiwan region are as follows:

Hong Kong: 5,407 (5,159 recoveries, 108 deaths)

Macao: 46 (46 recoveries)

Taiwan: 584 (528 recoveries, 7 deaths)