A medical worker collects a swab sample of a resident for nucleic acid testing at a community in Yu'an District of Lu'an City, east China's Anhui Province, May 15, 2021. East China's Anhui Province on Friday reported two confirmed case and seven asymptomatic carriers of COVID-19 in the city of Lu'an. Authorities are providing nucleic acid tests for local residents. (Xinhua/Zhou Mu)
