Airborne transmission occurs for respiratory infections such as novel coronavirus pneumonia; airborne transmission does not occur for infectious diseases such as viral hepatitis. Whether airborne transmission occurs or not needs to be identified according to the transmission route of the specific pathogen. Common transmission routes include respiratory transmission, gastrointestinal transmission, contact transmission, insect-borne transmission, and transmission through blood and body fluids. 1. Respiratory tract infection: including air, droplet and other means of transmission. It is mostly seen in the transmission process of new coronavirus pneumonia, influenza, tuberculosis and other diseases. 2. Digestive tract infection: including water, food and other means of transmission. Mostly seen in the transmission process of bacillary dysentery, viral hepatitis A and other diseases. 3. Contact infection: including hands, shared items and other means of transmission. Mostly seen in the transmission process of rabies, tetanus, trachoma and other diseases. 4. Insect-borne infections: including mosquitoes, fleas, lice and other means of transmission. Mostly seen in the transmission process of encephalitis B, plague, dengue fever and other diseases. 5. Blood and body fluid transmission: including blood, blood products, body fluids and other means of transmission. Mostly seen in the transmission process of AIDS, viral hepatitis B and other diseases. In daily life, it is recommended to wash hands diligently, wear masks, and process food and drink sufficiently, which can effectively block the spread of the epidemic; if you suspect the above diseases, it is recommended to go to the hospital in time. Tips] The “new coronary pneumonia, new coronary virus pneumonia” mentioned in this article has been renamed to “new coronary virus infection” on December 26, 2022, as announced by the National Health Commission.