A medical worker collects a swab sample for nucleic acid testing at a testing site in a community in Siming District, Xiamen, southeast China's Fujian Province, Sept. 14, 2021. Xiamen, a port city in Fujian Province, has started a citywide nucleic acid testing due to the latest COVID-19 resurgence in the city, authorities said Tuesday. As of 11 a.m. Tuesday, Xiamen had reported 35 locally transmitted confirmed COVID-19 cases and one asymptomatic carrier in the latest resurgence, according to the headquarters. (Photo by Zeng Demeng/Xinhua)
