Epidemic prevention refers to measures taken to prevent, control or eradicate infectious diseases, which should be kept away from infectious sources, disinfected on a daily basis, and vaccinated if necessary. 1. For infectious diseases with high infectiousness and high death rate, such as cholera, plague, rabies, etc., contact with infected patients and infected animals should be avoided; 2. For diseases transmitted by respiratory tract through droplets and nasopharyngeal secretions from patients, such as infectious atypical pneumonia, influenza, influenza, influenza, measles, diphtheria, pertussis, tuberculosis, etc., respiratory isolation should be carried out, and masks should be worn daily to reduce droplet transmission; 3. For infectious diseases transmitted by direct or indirect contamination of food and eating utensils by patients’ excreta, such as typhoid fever, bacillary dysentery, hepatitis A, etc., care should be taken to avoid contact with the excreta of infected patients and articles used; 4. For direct or indirect contact with infected blood and body fluids and occurring 4. For infectious diseases that occur through direct or indirect contact with infected blood and body fluids, such as hepatitis B, hepatitis C, AIDS, leptospirosis, etc., care should be taken to avoid contact with the blood of the infected person, especially when there is damage to the exposed parts of the skin; 5. 6. For infectious diseases transmitted by insects as a vector, such as B encephalitis, malaria, typhus, typhoid fever, regression fever, filariasis, etc., insect isolation should be carried out, and the room should be screened with windows and doors to prevent mosquitoes, flies, mites, lice and fleas; 7. Immunity, during the epidemic of infectious diseases, the high-risk groups with occupational infections should be given timely preventive measures, such as vaccination.