Zhengzhou conducts citywide nucleic acid testing(1/5)

A medical worker collects swab sample from a resident in Zhengzhou, Henan province, in the small hours of Aug 2, 2021. (Photo: China News Service/Kan Li)

Zhengzhou has set up a total of 4,168 sampling sites for nucleic acid testing and planed to complete the citywide nucleic acid testing task in two days.

A medical worker collects swab sample from a resident in Zhengzhou, Henan province, in the small hours of Aug 2, 2021. (Photo: China News Service/Kan Li)

Medical workers collect swab sample from a resident for COVID-19 nucleic acid testing in Zhengzhou, Henan province, in the small hours of Aug 2, 2021. (Photo: China News Service/Kan Li)

Residents scan codes to register in preparation for nucleic acid tests in Zhengzhou, Henan province, in the small hours of Aug 2, 2021. (Photo: China News Service/Kan Li)

Residents scan codes to register in preparation for nucleic acid tests in Zhengzhou, Henan province, in the small hours of Aug 2, 2021. (Photo: China News Service/Kan Li)