A medical worker takes a swab sample from a citizen for nucleic acid testing at Heping District in Tianjin, north China, July 24, 2022. (Xinhua/Sun Fanyue)
BEIJING, July 31 (Xinhua) -- The Chinese mainland on Saturday reported 74 locally-transmitted confirmed COVID-19 cases, including 32 in Guangxi and 31 in Gansu, the National Health Commission said Sunday. ■
