Specific infectious diseases are divided into three categories: A, B and C. 1. Category A infectious diseases are: plague and cholera. 2. Category B infectious diseases refer to: infectious atypical pneumonia, AIDS, viral hepatitis, poliomyelitis, human infection with highly pathogenic avian influenza, measles, epidemic hemorrhagic fever, rabies, epidemic encephalitis B, dengue fever, anthrax, bacterial and amoebic dysentery, tuberculosis, typhoid fever and paratyphoid fever, epidemics of cerebral and spinal meningitis, pertussis, diphtheria, neonatal tetanus, scarlet fever, brucellosis, Gonorrhea, syphilis, leptospirosis, schistosomiasis, malaria. 3. Category C infectious diseases are: influenza, mumps, rubella, acute hemorrhagic conjunctivitis, leprosy, epidemic and endemic typhus, black fever, encapsulated disease, filariasis, and infectious diarrheal diseases other than cholera, bacterial and amoebic dysentery, typhoid fever and paratyphoid fever. For other infectious diseases other than those stipulated above, if they need to be included in Category B or C infectious diseases according to their outbreaks, epidemics and degree of harm, the health administrative department of the State Council shall decide and publicize them. For infectious atypical pneumonia in category B infectious diseases, pulmonary anthrax in anthrax and human infection of highly pathogenic avian influenza, the preventive and control measures for category A infectious diseases referred to in this Law shall be adopted. Where other category B infectious diseases and outbreaks of infectious diseases of unknown cause require the adoption of preventive and control measures for the category A infectious diseases referred to in this Law, the health administrative department of the State Council shall promptly report them to the State Council for approval before they are promulgated and implemented.