Medical workers from Zhejiang Province carry out nucleic acid tests for residents at a COVID-19 testing site in Pudong District of east China's Shanghai, March 28, 2022. A team of testing personnel from neighboring province of Zhejiang on Monday arrived in Shanghai to support a new round of nucleic acid testing in the city. (Photo by Jiang Aishan/Xinhua)
A medical worker from Zhejiang Province takes a swab sample from a resident for nucleic acid test at a COVID-19 testing site in Pudong District of east China's Shanghai, March 28, 2022. A team of testing personnel from neighboring province of Zhejiang on Monday arrived in Shanghai to support a new round of nucleic acid testing in the city. (Photo by He Zhongming/Xinhua)
A medical worker from Zhejiang Province takes a swab sample from a resident for nucleic acid test at a COVID-19 testing site in Pudong District of east China's Shanghai, March 28, 2022. A team of testing personnel from neighboring province of Zhejiang on Monday arrived in Shanghai to support a new round of nucleic acid testing in the city. (Photo by Jiang Aishan/Xinhua)
A medical worker from Zhejiang Province takes a swab sample from a resident for nucleic acid test at a COVID-19 testing site in Pudong New Area of east China's Shanghai, March 28, 2022. A team of testing personnel from neighboring province of Zhejiang on Monday arrived in Shanghai to support a new round of nucleic acid testing in the city. (Xinhua)
Medical workers from Zhejiang Province prepare to carry out nucleic acid tests for residents at a COVID-19 testing site in Pudong New Area of east China's Shanghai, March 28, 2022. A team of testing personnel from neighboring province of Zhejiang on Monday arrived in Shanghai to support a new round of nucleic acid testing in the city. (Xinhua)
A medical worker from Zhejiang Province takes a swab sample from a resident for nucleic acid test at a COVID-19 testing site in Pudong District of east China's Shanghai, March 28, 2022. A team of testing personnel from neighboring province of Zhejiang on Monday arrived in Shanghai to support a new round of nucleic acid testing in the city. (Photo by Jiang Aishan/Xinhua)
A medical worker from Zhejiang Province takes a swab sample from a resident for nucleic acid test at a COVID-19 testing site in Pudong District of east China's Shanghai, March 28, 2022. A team of testing personnel from neighboring province of Zhejiang on Monday arrived in Shanghai to support a new round of nucleic acid testing in the city. (Photo by Jiang Aishan/Xinhua)
