Empty Streets of Downtown Shanghai Days before Covid 19 Lockdown in 2022

covid19 shanghai lockdown pandemic epidemic quarantine corona virus covid 19 bund china empty store wuhan coronavirus disease chinese medical personnel covid healthcare workers pandemic response isolation containment measures frontline workers public health crisis protective gear testing site health professionals virus outbreak isolation facility epidemic control health workers respiratory illness infection prevention medical emergency crisis management healthcare support patient care virus containment disease outbreak emergency response quarantine measures contagious disease virus corona outbreak health worker community compound supervised