| Answer | Crossword Clue |
|---|---|
| smallpoxes | SMALLPOX, a virus disease |
| variola | smallpox (a virus disease) |
| variolas | VARIOLA, smallpox (a virus disease) |
| variolar | pertaining to variolas (smallpox (a virus disease)) |
| cowpox | eruptive disease appearing on the teats and udders of cows, in which small pustules form that contain a virus used in the vaccination of humans against smallpox |
| vaccinia | acute infection caused by inoculation with vaccinia virus as a prophylactic against smallpox, characterized by localized pustular eruptions |
