Medical staff guide residents at a nucleic acid testing site in Qingdao, east China's Shandong Province, Oct. 14, 2020. The city of Qingdao in east China's Shandong Province reported one new confirmed case of COVID-19 on Wednesday, the provincial and municipal health commissions said Thursday. The new case was previously diagnosed as an asymptomatic case on Sept. 24, according to the Qingdao municipal health commission. (Xinhua/Li Ziheng)

Medical staff wait to collect swab samples from residents for COVID-19 test in Qingdao, east China's Shandong Province, Oct. 14, 2020. The city of Qingdao in east China's Shandong Province reported one new confirmed case of COVID-19 on Wednesday, the provincial and municipal health commissions said Thursday. The new case was previously diagnosed as an asymptomatic case on Sept. 24, according to the Qingdao municipal health commission. (Xinhua/Li Ziheng)

Medical staff wait to collect swab samples from residents for COVID-19 test in Qingdao, east China's Shandong Province, Oct. 14, 2020. The city of Qingdao in east China's Shandong Province reported one new confirmed case of COVID-19 on Wednesday, the provincial and municipal health commissions said Thursday. The new case was previously diagnosed as an asymptomatic case on Sept. 24, according to the Qingdao municipal health commission. (Xinhua/Li Ziheng)