Shanghai seeks ‘societal zero COVID’ with rounds of testing

Health workers wearing protective gear chat with security guards behind a barricaded fence of a locked down communities on Wednesday, April 27, 2022, in Beijing. Workers put up fencing and police restricted who could leave a locked-down area in Beijing on Tuesday as authorities in the Chinese capital stepped up efforts to prevent a major COVID-19 outbreak like the one that has all but shut down the city of Shanghai. (AP Photo/Andy Wong)