People take nucleic acid testing in Shandong

Employees queue up for nucleic acid testing at a company in Qingzhou City, east China's Shandong Province, March 15, 2022. (Photo by Wang Jilin/Xinhua)

Employees queue up for nucleic acid testing at a company in Qingzhou City, east China's Shandong Province, March 15, 2022. (Photo by Wang Jilin/Xinhua)

A medical worker takes a swab sample from a resident for nucleic acid testing in Shuiquan Township of Zaozhuang City, east China's Shandong Province, March 15, 2022. (Photo by Liu Mingxiang/Xinhua)

A medical worker takes a swab sample from a resident for nucleic acid testing in Xigang Township of Tengzhou City, east China's Shandong Province, March 15, 2022. (Photo by Li Zhijun/Xinhua)

Aerial photo shows employees lining up for nucleic acid testing at a company in Qingzhou City, east China's Shandong Province, March 15, 2022. (Photo by Wang Jilin/Xinhua)

A medical worker takes a swab sample from a resident for nucleic acid testing in Qingdao, east China's Shandong Province, March 14, 2022. (Photo by Liu Qiang/Xinhua)

A medical worker deals with a swab sample for nucleic acid testing in Xigang Township of Tengzhou City, east China's Shandong Province, March 15, 2022. (Photo by Li Zhijun/Xinhua)

A medical worker takes a swab sample from a resident for nucleic acid testing in Tancheng County of Linyi City, east China's Shandong Province, March 15, 2022. (Photo by Fang Dehua/Xinhua)

A medical worker takes a swab sample from a resident for nucleic acid testing in Tancheng County of Linyi City, east China's Shandong Province, March 15, 2022. (Photo by Fang Dehua/Xinhua)

A medical worker takes a swab sample from a child for nucleic acid testing in Qingdao, east China's Shandong Province, March 14, 2022. (Photo by Liu Qiang/Xinhua)