A medical worker takes a swab sample from a boy for nucleic acid test at a COVID-19 testing site in Fengtai district in Beijing, capital of China, Jan 23, 2022. (TANG RUFENG / XINHUA)

BEIJING - The Chinese mainland reported 40 new locally-transmitted COVID-19 infections over the past day, down from 54 on Saturday.

Of the local cases reported Sunday, 24 were in the eastern province of Zhejiang; 11 in north China's Tianjin Municipality; three in Beijing, and one each in northeast China's Heilongjiang and central China's Henan, according to the latest data from the National Health Commission.

A total of 18 new imported COVID-19 cases were reported across the Chinese mainland on Sunday, compared with 27 the previous day

Besides, a total of 18 new imported COVID-19 cases were reported across the Chinese mainland on Sunday, compared with 27 the previous day.

Following the recovery of 147 patients on Sunday, the number of COVID-19 patients currently undergoing treatment has dropped to 1,937 from 2,026 a day earlier.

READ MORE: Mainland reports 54 new local COVID-19 cases

There have been no new COVID-19 deaths and the death toll has remained unchanged at 4,636 for more than a year.