A medical worker takes a swab sample from a resident for nucleic acid test in Shenze County of Shijiazhuang, north China's Hebei Province, Oct. 31, 2021. One locally transmitted COVID-19 case and one asymptomatic case have been registered in Shenze on Sunday. (Photo by Zhai Haijing/Xinhua)
Residents queue up for nucleic acid tests in Shenze County of Shijiazhuang, north China's Hebei Province, Oct. 31, 2021. One locally transmitted COVID-19 case and one asymptomatic case have been registered in Shenze on Sunday. (Photo by Zhai Haijing/Xinhua)
Staff members check equipment for epidemic control and prevention in Shenze County of Shijiazhuang, north China's Hebei Province, Oct. 31, 2021. One locally transmitted COVID-19 case and one asymptomatic case have been registered in Shenze on Sunday. (Photo by Zhai Haijing/Xinhua)
A medical worker records residents' information for nucleic acid test in Shenze County of Shijiazhuang, north China's Hebei Province, Oct. 31, 2021. One locally transmitted COVID-19 case and one asymptomatic case have been registered in Shenze on Sunday. (Photo by Zhai Haijing/Xinhua)
Staff members record data at a local hospital in Shenze County of Shijiazhuang, north China's Hebei Province, Oct. 31, 2021. One locally transmitted COVID-19 case and one asymptomatic case have been registered in Shenze on Sunday. (Photo by Zhai Haijing/Xinhua)
