Shanghai issues 'nucleic acid sampling certificates' to ensure mass testing

A volunteer counts the nucleic acid sampling certificates at a testing site in Shanghai, May 30, 2022. Shanghai issued nucleic acid sampling certificates to meet the public's demand for nucleic acid testing under normal epidemic prevention and control.

Residents register information to receive a nucleic acid sampling certificate at a testing site in Shanghai, May 30, 2022. 

A medical worker prepares at a testing site in Shanghai, May 30, 2022. 

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