A staff member registers information of a resident for nucleic acid test in Liangjiang New District, southwest China's Chongqing, Aug. 24, 2022. (Xinhua/Huang Wei)
A medical worker takes a swab sample from a child for nucleic acid test in Liangjiang New District, southwest China's Chongqing, Aug. 24, 2022. (Xinhua/Huang Wei)
A medical worker takes a swab sample from a resident for nucleic acid test in Liangjiang New District, southwest China's Chongqing, Aug. 24, 2022. (Xinhua/Huang Wei)
A medical worker conducts tests of the nucleic acid samples at a mobile lab in southwest China's Chongqing, Aug. 24, 2022. (Photo by Guo Xu/Xinhua)
A staff member registers information of a resident for nucleic acid test in Liangjiang New District, southwest China's Chongqing, Aug. 24, 2022. (Xinhua/Huang Wei)
