A medical staff passes the throat swab samples to the integrated nucleic acid testing laboratory at Haidian Hospital in Beijing, capital of China, June 20, 2020. An integrated nucleic acid testing laboratory has been put into use at Haidian Hospital in recent days. The lab provides nucleic acid testing services for patients of Haidian Hospital and local citizens booking online for the service. (Xinhua/Ren Chao)

A medic checks the information of a throat swab sample at Haidian Hospital in Beijing, capital of China, June 20, 2020. An integrated nucleic acid testing laboratory has been put into use at Haidian Hospital in recent days. The lab provides nucleic acid testing services for patients of Haidian Hospital and local citizens booking online for the service. (Xinhua/Ren Chao)

A medic carries throat swab samples to the integrated nucleic acid testing laboratory at Haidian Hospital in Beijing, capital of China, June 20, 2020. An integrated nucleic acid testing laboratory has been put into use at Haidian Hospital in recent days. The lab provides nucleic acid testing services for patients of Haidian Hospital and local citizens booking online for the service. (Xinhua/Ren Chao)

A medic carries throat swab samples to the integrated nucleic acid testing laboratory at Haidian Hospital in Beijing, capital of China, June 20, 2020. An integrated nucleic acid testing laboratory has been put into use at Haidian Hospital in recent days. The lab provides nucleic acid testing services for patients of Haidian Hospital and local citizens booking online for the service. (Xinhua/Ren Chao)

Photo taken on June 20, 2020 shows the integrated nucleic acid testing laboratory at Haidian Hospital in Beijing, capital of China. An integrated nucleic acid testing laboratory has been put into use at Haidian Hospital in recent days. The lab provides nucleic acid testing services for patients of Haidian Hospital and local citizens booking online for the service. (Xinhua/Ren Chao)

A medic (R) takes sample from a citizen at the sample collecting post at Haidian Hospital in Beijing, capital of China, June 20, 2020. An integrated nucleic acid testing laboratory has been put into use at Haidian Hospital in recent days. The lab provides nucleic acid testing services for patients of Haidian Hospital and local citizens booking online for the service. (Xinhua/Ren Chao)

A medic(R) introduces the nucleic acid testing procedures to citizens at Haidian Hospital in Beijing, capital of China, June 20, 2020. An integrated nucleic acid testing laboratory has been put into use at Haidian Hospital in recent days. The lab provides nucleic acid testing services for patients of Haidian Hospital and local citizens booking online for the service. (Xinhua/Ren Chao)

A medic scans information of tested people at the sample collecting post at Haidian Hospital in Beijing, capital of China, June 20, 2020. An integrated nucleic acid testing laboratory has been put into use at Haidian Hospital in recent days. The lab provides nucleic acid testing services for patients of Haidian Hospital and local citizens booking online for the service. (Xinhua/Ren Chao)