How long will Xi 'an B seal the building?

In the residential building where the close contact is located, after the close contact finally leaves the residential building and completes the environmental disinfection 14 days, four times of nucleic acid detection will be carried out in the building during the closed period, and the date of nucleic acid detection in the building is that the last nucleic acid detection result of the close contact is negative. During the period of closure, if close contacts become full members, the scope of closure will be extended to the whole community, and the standards for unsealing confirmed cases and asymptomatic infected persons will be lifted.

The community where the confirmed and asymptomatic infected people live will be closed for 14 days after the confirmed cases or asymptomatic infected people finally leave the community and complete environmental disinfection. During the storage period, four nucleic acid tests were carried out, the last nucleic acid test was carried out on day 14, and the last nucleic acid test was applied for unsealing on day 14.