ZHENGZHOU — Zhengzhou, the capital of Central China's Henan province, has tightened epidemic prevention and control measures after a recent resurgence of COVID-19 infections.

Zhengzhou designated one area as high-risk and six as medium-risk for COVID-19 from Aug 3.

By 6 pm on Aug 2, the city had reported 13 locally-transmitted confirmed COVID-19 cases and 50 asymptomatic carriers.

Zhengzhou launched citywide nucleic acid testing for COVID-19 on Aug 1 and over 9.8 million people had been sampled as of 6 pm on Aug 2.