The closing time of the controlled area should not be less than 14 days, the last case.

The infected person's nucleic acid test is negative, and the closed control area can be completely unsealed after 14 days. But the specific situation still depends on the actual situation.

The division standard of closed control area:

Residential areas where cases and asymptomatic infected people live

Surroundings with frequent activities can be divided into closed areas.

Two days before the onset of the case or asymptomatic infected people tested positive.

From the first 2 days to quarantine management, if the workplace, activities,

There is a great possibility of man-made transmission in areas such as the ground, so it is difficult to judge close contacts and close contacts, and the relevant areas can also be divided into closed control areas.

The enclosure control area can be accurately divided into residential areas (natural village groups) and buildings.

Buildings, units, etc. , the implementation of "regional closed, never leave home, door-to-door service"