The risk levels are divided as follows:
1, low risk: no confirmed cases or no newly confirmed cases for 14 consecutive days;
2. Medium risk: there are new confirmed cases within 14 days, and the cumulative confirmed cases are not more than 50, or the cumulative confirmed cases are more than 50, and there is no cluster epidemic within 14 days;
3. High risk: the cumulative number of cases exceeds 50, and a cluster epidemic occurs within 14 days.
The prevention and control strategies for low, medium and high risk areas are as follows:
1. Low-risk areas: implement the strategy of "external defense and internal progress". Strengthen the follow-up management of influxes in areas with serious epidemic situation and high-risk areas, and do a good job in health monitoring and service. Medical institutions strengthen the monitoring, discovery and reporting of fever outpatient cases, and disease control institutions timely carry out epidemiological investigations and follow-up management of close contacts. Supervise and guide urban and rural communities, organs, enterprises and institutions to strictly implement community prevention and control measures, do a good job in environmental sanitation, and popularize public disease prevention knowledge and protection skills;
2. Medium risk area: implement the strategy of "introducing foreign defense and preventing proliferation inside". On the basis of taking various measures in low-risk areas, we should make good preparations for medical treatment, personnel, materials and places related to disease prevention and control, and conduct isolated medical observation and management for close contacts of cases. Taking school classes, construction units, factory workshops and workplace offices as the smallest units, and taking case discovery, epidemiological investigation and epidemic analysis as clues, reasonably determine the prevention and control management places and personnel, and implement targeted prevention and control measures. Townships, streets and urban and rural communities without confirmed cases can take prevention and control measures with reference to low-risk areas;
3. High-risk areas: implement the strategy of "preventing proliferation at home, preventing exports abroad and strictly controlling". On the basis of taking various measures in medium-risk areas, stop gathering activities and implement regional traffic control after approval according to law and procedures. Take the county as a unit, comprehensively investigate fever patients, timely treat and manage suspected cases, confirmed cases and asymptomatic infected persons, and implement isolated medical observation on close contacts. Disinfect the relevant places in urban residential areas (rural natural villages) where community spread or cluster epidemic occurs, and take control measures such as restricting people's gathering and access.
Legal basis: People's Republic of China (PRC) Law on the Prevention and Control of Infectious Diseases.
Twelfth all units and individuals in People's Republic of China (PRC) must accept the prevention and control measures such as investigation, inspection, sample collection and isolation treatment of infectious diseases by disease prevention and control institutions and medical institutions, and provide relevant information truthfully. Disease prevention and control institutions and medical institutions shall not disclose relevant information and materials involving personal privacy.
Where the administrative department of health and other relevant departments, disease prevention and control institutions and medical institutions illegally implement administrative management or prevention and control measures and infringe upon the legitimate rights and interests of units and individuals, the relevant units and individuals may apply for administrative reconsideration or bring a lawsuit according to law.