Public health events refer to major infectious diseases, group diseases with unknown causes, major food and occupational poisoning and other events that seriously affect public health. It mainly includes infectious diseases, mass unexplained diseases, food safety and occupational hazards, animal epidemics and other events that seriously affect public health and life safety.
Public health events generally refer to sudden public health events, which suddenly cause or may cause serious damage to public health.
According to the nature, degree of harm and scope of emergencies, public health incidents can be divided into four levels. The causes of public health events are diverse, with different distributions, wide spread, complex hazards, comprehensive governance and diverse types. In public health events, new events appear constantly, food-borne diseases and food poisoning are more serious, and the events are seriously harmful.