Mass Testing In China To Control Recent COVID Outbreaks

BEIJING, CHINA - MARCH 21: A medical workers dressed in PPE performs a PCR tests from a booth during a mass testing campaign on March 21, 2022 in Beijing, China. China is trying to curb the country's biggest COVID-19 outbreak since the first wave in 2020. Some hard hit cities like Changchun, provincial capital of Jilin Province, have been put into full lockdown, other big cities like Shanghai and Shenzhen have taken a more flexible approach, locking down and testing key areas and closing most of public spaces. (Photo by Andrea Verdelli/Getty Images)