1. Epidemic situation of major infectious diseases:
Refers to the outbreak and epidemic of infectious diseases, including the outbreak of plague, pulmonary anthrax and cholera, the epidemic of plague, brucellosis and anthrax among animals, the outbreak of Class B and Class C infectious diseases, or the deaths of many people, rare or disappearing infectious diseases and suspected cases of new infectious diseases.
2. Unknown group diseases:
It refers to a disease in which three or more cases with the same clinical manifestations occur simultaneously or successively in relatively concentrated areas (such as hospitals, natural villages, communities, construction sites, schools, etc.) within a certain period of time (usually within two weeks), and the causes cannot be diagnosed or explained by experts organized by hospitals at or above the county level, and there are serious and fatal cases.
3. Major food poisoning and occupational poisoning:
Major food poisoning and occupational poisoning, including drinking water and food poisoning in which more than 30 people were poisoned or 1 person died; Occupational poisoning or 1 person death occurred in a short time.
4. Other events that seriously affect public health:
Including the outbreak of iatrogenic infection; Group reaction or death caused by drugs or immunization, water, environmental and food pollution that seriously threatens or endangers public health, loss and leakage of radioactive, toxic and harmful chemicals, biological, chemical, nuclear radiation and other terrorist attacks; Collective acute poisoning incidents caused by toxic and harmful chemicals and biotoxins.
Abnormal animal hosts and vectors of infectious diseases with potential threats, the death of students due to accidental suicide or homicide 1 person or more, and other major public health events temporarily stipulated by the health administrative department at a higher level.