According to the Plan for Delineation and Control of Epidemic Risk Areas in COVID-19 issued by the Comprehensive Group for Joint Prevention and Control of Epidemic in novel coronavirus, the State Council:

High-risk area promotion standard:

No new infection cases were found in the high-risk area for five consecutive days. On the fifth day, all the people in the high-risk area were negative after completing a round of nucleic acid screening, and they were reduced to low-risk areas. High-risk areas that meet the conditions for unsealing should be unsealed in time.

Classified implementation of community prevention and control measures

Nucleic acid detection in high risk areas. After the closure control was implemented, three consecutive tests were carried out in the first three days, 1 and two full-time nucleic acid tests were completed on the third day, and 1 antigen tests were carried out on the second day. The frequency of subsequent tests can be determined according to the test results; Within 24 hours before deregulation, 65438 0 nucleic acid tests should be completed. When conducting nucleic acid detection, it is necessary to set up sampling points reasonably and use them after being evaluated by professionals; Scientifically determine the route, strengthen on-site organization and management, implement special guidance, time-sharing and zoning, and fix the route, and urge personal protection to prevent cross-infection. For buildings and courtyards where positive infected people have been found, antigen testing can be carried out first, and then nucleic acid testing can be carried out in an orderly manner after negative. Special personnel, such as risk personnel who have not been transported, those who are positive for antigen detection and nucleic acid mixing tubes, patients with mobility difficulties, and the elderly, should take samples at home and carry out single sampling and single inspection.