Variola. A human viral disease characterised by vesicular skin lesions covering the whole body but being particularly heavy at the extremeties including the face. Caused by a pox virus. The disease can be prevented through regular smallpox vaccinations. Variola has now been officially declared eradicated by the WHO.... smallpox
n. one of a group of large DNA-containing viruses including those that cause *smallpox (variola) and *cowpox (vaccinia) in humans, and pox and tumours in animals.... poxvirus