In order to further guide all localities to do a good job in the prevention and control of novel coronavirus, on the basis of earnestly summarizing the prevention and control practice after the release of novel coronavirus Prevention and Control Plan (Eighth Edition), especially in view of the characteristics of Omicron variants, such as rapid spread and strong concealment, the State Council organized and revised the novel coronavirus Prevention and Control Plan of novel coronavirus Epidemic Prevention and Control Mechanism (Ninth Edition). We will fully implement the general strategy of "external defense investment, internal defense rebound" and the general policy of "dynamic clearance", earnestly safeguard people's life safety and health, and maximize the overall planning of epidemic prevention and control and economic and social development. Compared with the eighth edition, the main revisions include:
First, optimize and adjust the time limit and mode of risk personnel isolation management.
Adjust the control time of close contacts and entry personnel from "14 days of centralized isolation medical observation +7 days of home health monitoring" to "7 days of centralized isolation medical observation +3 days of home health monitoring", take nucleic acid detection measures for "1, 4, 7 and 14 days of centralized isolation medical observation" and collect nasopharyngeal swabs. The control measures of close contact were changed from "7-day centralized isolation medical observation" to "7-day home isolation medical observation", and nucleic acid detection was carried out on 1, 4 and 7 days.
Two, unified management area and high risk area delineation standards.
The two types of risk area delineation standards and prevention and control measures are connected and corresponding to each other, and the concept of medium and high risk areas is used uniformly to form a new risk area delineation and control scheme. In high-risk areas, "home-to-home service" was implemented, and no new infections fell to medium-risk areas for 7 consecutive days, and no new infections fell to low-risk areas for 3 consecutive days. In other areas, people with a history of living in high-risk areas in the past 7 days were subjected to 7-day centralized isolation medical observation. In the middle-risk area, the practice of "staying out of the area and taking things at the wrong peak" was implemented, and no new infections were reduced to the low-risk area for 7 consecutive days. In other areas, people living in medium-risk areas in the past 7 days will be observed at home for 7 days. Low-risk areas refer to other areas in the counties (cities, districts and banners) where high-risk areas are located, and "personal protection and avoidance of gathering" are implemented. In other areas, people living in low-risk areas in the last 7 days are required to complete nucleic acid testing twice within 3 days.
Third, improve the requirements for epidemic monitoring.
Encrypt the frequency of nucleic acid detection for high-risk occupational groups, adjust the nucleic acid detection for those who have direct contact with entry personnel, articles and the environment to 1 time per day, and adjust the nucleic acid detection for employees with dense personnel, frequent contact and strong mobility to twice a week. Adding antigen detection as a supplementary means of epidemic monitoring, grass-roots medical and health institutions can add antigen detection to suspicious patients and people in high-risk areas when dealing with the epidemic.
Fourthly, optimize the regional nucleic acid detection strategy.
Clarify the regional nucleic acid detection schemes of different population sizes, judge whether the source of infection is clear, whether there is community transmission risk and whether the transmission chain is clear after comprehensive epidemic situation, and determine the scope and frequency of regional nucleic acid detection according to the principle of risk and grading.