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Beijing residents lined up for throat swabs as workers put up fencing and police restricted who could leave a locked-down area on Tuesday after health officials said that 22 new COVID-19 cases were found over the course of the last 24 hours.

Mass testing was expanded to 11 of the Chinese capital’s 16 districts and Beijing tested nearly 3.8 million people in the Chaoyang district on Monday.

COVID CASES IN BEIJING LEAD OFFICIALS TO SUSPEND CLASSES, CONDUCT MASS TESTING

Chaoyang has had the most cases in the Beijing outbreak – though all the results there have been negative except for one in a group of five that were tested together.

Since the outbreak was discovered five days ago, the total number of infections has reached 92.