Legal analysis: natural disasters, accidental disasters, public **** health incidents and social security incidents four categories. Emergency public **** event refers to the sudden occurrence, causing or likely to cause major casualties, property damage, ecological damage and serious social harm, endangering the public **** security emergency, divided into natural disasters, accidental disasters, public **** health incidents and social security incidents in four categories. Various types of public **** events in accordance with its nature, severity, controllability and scope of influence and other factors can be generally divided into four levels: Ⅳ (general), Ⅲ (larger), Ⅱ (major), Ⅰ (especially major), in turn, blue, yellow, orange and red.
Legal basis: "Emergency Regulations for Public **** Health Emergencies" Article 11 of the national emergency response plan should include the following main elements: (a) the composition of the emergency response command and the duties of the relevant departments; (b) monitoring and early warning of emergencies; (c) the collection, analysis, reporting and notification of information on emergencies system; (d) emergency response technology and monitoring institutions and their tasks; (e) emergency response technology and monitoring institutions and their tasks; (f) emergency response technology and monitoring institutions and their tasks; (g) emergency response technology and monitoring institutions and their tasks. and monitoring institutions and their tasks; (v) classification of emergencies and emergency treatment work program; (vi) emergency prevention, on-site control, emergency response facilities, equipment, treatment drugs and medical equipment, and other materials and technology reserves and scheduling; (vii) emergency response to emergencies, construction and training of professional teams.