Variola n. : The smallpox.

Example:
What year was Variola Major officially eradicated?

Taxonomy
smallpox, disease, infection, vaccination, virus, vaccine, variola major, smallpox vaccination, infected, skin, variola, hemorrhagic smallpox, variola virus, pustules, lesions, variola minor, Europe, death.

Defination from the web:
variola virus, which belongs to the genus Orthopoxvirus, the family Poxviridae, and subfamily chordopoxvirinae. ... Transmission of smallpox occurs through inhalation of airborne variola virus, usually droplets expressed from the oral, nasal, or ...