Most infectious diseases are accompanied by fever. Common infectious diseases that cause fever include plague and cholera in category A infectious diseases, SARS, AIDS, viral hepatitis, poliomyelitis, human highly pathogenic avian influenza, influenza A (H1N1), measles, epidemic hemorrhagic fever, encephalitis B, epidemic meningomyelitis, rabies, bacterial dysentery, typhoid and paratyphoid fever, tetanus, brucellosis, malaria, leptospirosis, tetanus, brucellosis, malaria, and leptospirosis. There are also some category C infections, such as epidemic viral mumps, epidemic viral influenza, rubella, chickenpox, and infectious diarrhea, which can cause fever.