| variola | a highly contagious viral disease characterized by fever and weakness and skin eruption with pustules that form scabs that slough off leaving scars |
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| variola | a type of smallpox virus that has a fatality rate of up to 25 percent |
| variola | a type of smallpox virus that has a fatality rate of up to 25 percent |
| variola | a type of smallpox virus that has a fatality rate of about 1 percent |
| variola | a type of smallpox virus that has a fatality rate of about 1 percent |
| variola | the virus that causes smallpox in humans |