There were no new confirmed COVID-19 cases and no new asymptomatic infections reported on Thursday, the authorities in northeast China's Heilongjiang Province announced Friday, adding that the last asymptomatic patient in the province had been discharged from quarantine.

A total of 559 confirmed domestic COVID-19 cases have been reported in the province as of Thursday, with 467 asymptomatic patients still under medical observation.

A total of 386 confirmed imported cases in the province have recovered and been discharged from hospitals, but five people were still under medical observation as of Thursday.