A medical worker takes a swab sample from a resident for nucleic acid test at a community in East China's Shanghai, March 13, 2022. [Photo/Xinhua]
Residents queue to receive nucleic acid tests at a community in East China's Shanghai, March 13, 2022. [Photo/Xinhua]
A medical worker takes a swab sample from a child for nucleic acid test at a community in East China's Shanghai, March 13, 2022. [Photo/Xinhua]
Residents register before receiving nucleic acid tests at a community in East China's Shanghai, March 13, 2022. [Photo/Xinhua]
