BEIJING -- The Chinese mainland reported four new imported COVID-19 cases Sunday, bringing the total number of imported cases to 1,780, the National Health Commission said Monday.

Of the four imported cases, three were reported in Sichuan province and the rest one in Shanghai, the commission said, adding that one new suspected case from abroad was reported in Shanghai.

Of all the imported cases on the mainland, 1,717 had been discharged from hospitals after recovery, and 63 remained hospitalized, the commission said.

No deaths had been reported from the imported cases.

Nine COVID-19 patients were discharged from hospitals after recovery on the Chinese mainland Sunday, the National Health Commission said Monday.

There were 65 patients still being treated, the commission said in its daily report.

Altogether 78,341 patients had been cured and discharged from hospitals by Sunday, the report said.

As of Sunday, a total of 83,040 confirmed COVID-19 cases had been reported on the mainland, and 4,634 people had died of the disease.