Smallpox Smallpox, which is also called variola, comes in two forms. Variola major is the more deadly form of smallpox killing 30% of victims. Variola minor kills only 1% of victims but leaves the victims very sick. Smallpox is primarily a disease of children or young adults, but older people c...

Rabies Rabies is a infection transmitted to humans and certain other mammals by the saliva of an infected animal. Infection is through a bite or by skin or mucous membrane contact with infected saliva. The period of the disorder can be as short as ten days or as long as one year; the ...