Definition: An acute contagious disease, usually occurring in children, caused by the Varicella-Zoster virus genus, Varicellovirus, a member of the family Herpesviridae, and marked by a sparse eruption of papules, which become vesicles and then pustules, like that of smallpox although less severe and varying in stages, usually with mild constitutional symptoms; incubation period is about 14–17 days.
[Mod. L. dim. of variola]
See Also: herpes zoster