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When did the 202 1 Xuchang epidemic occur?

Masks began to appear on 202 1 12 3 1.

The start time of Xuchang mask was 202 1 year 65438+February 3 1 day, and the mask was controlled for one month. Xuchang at the end of June 2022 1 seal.

Mask unsealing refers to the management of unsealing the area closed and managed by masks. The condition of unsealing the mask is: on the basis of implementing various mask prevention and control measures, there are no new infections for 14 consecutive days and at least 4 rounds of full-time nucleic acid testing.