What is a controlled area and a sealed control area?

According to the spread risk of the epidemic, the community prevention and control, including administrative villages, is accurately divided into three areas: closed control area, control area and prevention area, and classified management is implemented.

the sealed-off control area is defined as the residential area or the surrounding area where cases and asymptomatic infected people live frequently, and the management of "closed area, staying at home and providing services to the door" is implemented.

the control area is defined from 2 days before the onset of the case or 2 days before the asymptomatic infected person is tested positive to the isolation management, and the areas such as their work and activities are subject to the management of "no people leaving the area and no gathering".

the scope of the prevention zone is defined as the closed control zone in the county (district) and the area outside the control zone, and the management of "strengthening social control and strictly limiting personnel gathering" is implemented.

risk area division standard

1. Region: street or township is the basic unit.

2. Time: the longest incubation period in COVID-19 is 14 days.

3. Epidemic situation: how many COVID-19 cases have been accumulated, and whether there is a cluster epidemic situation.

The criteria for dividing high, medium and low risk areas of the epidemic are to divide the streets or communities into three risk levels according to whether there are confirmed cases in COVID-19 and how many cases in COVID-19 within 14 days. At the same time, the specific criteria need to be appropriately adjusted according to the change of the epidemic situation in COVID-19.