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Citizens keep social distance while waiting for COVID-19 nucleic acid testing in Zhangjiajie, central China's Hunan Province, Aug. 10, 2021. Since the recent resurgence of COVID-19 in Zhangjiajie from July 29, the city has reported 53 locally-transmitted confirmed cases, and three asymptomatic carriers are currently under medical observation. (Xinhua/Chen Sihan)
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A medical worker takes a swab sample from a woman for COVID-19 nucleic acid testing in Zhangjiajie, central China's Hunan Province, Aug. 10, 2021. Since the recent resurgence of COVID-19 in Zhangjiajie from July 29, the city has reported 53 locally-transmitted confirmed cases, and three asymptomatic carriers are currently under medical observation. (Xinhua/Chen Sihan)
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A man takes a test tube for COVID-19 nucleic acid testing in Zhangjiajie, central China's Hunan Province, Aug. 10, 2021. Since the recent resurgence of COVID-19 in Zhangjiajie from July 29, the city has reported 53 locally-transmitted confirmed cases, and three asymptomatic carriers are currently under medical observation. (Xinhua/Chen Sihan)
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A medical worker takes a swab sample from a boy for COVID-19 nucleic acid testing in Zhangjiajie, central China's Hunan Province, Aug. 10, 2021. Since the recent resurgence of COVID-19 in Zhangjiajie from July 29, the city has reported 53 locally-transmitted confirmed cases, and three asymptomatic carriers are currently under medical observation. (Xinhua/Chen Sihan)
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Aerial photo shows citizens standing in social distance markers while waiting for COVID-19 nucleic acid testing in Zhangjiajie, central China's Hunan Province, Aug. 10, 2021. Since the recent resurgence of COVID-19 in Zhangjiajie from July 29, the city has reported 53 locally-transmitted confirmed cases, and three asymptomatic carriers are currently under medical observation. (Xinhua/Chen Sihan)
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Aerial photo shows citizens standing in social distance markers while waiting for COVID-19 nucleic acid testing in Zhangjiajie, central China's Hunan Province, Aug. 10, 2021. Since the recent resurgence of COVID-19 in Zhangjiajie from July 29, the city has reported 53 locally-transmitted confirmed cases, and three asymptomatic carriers are currently under medical observation. (Xinhua/Chen Sihan)