Varicella is also a work of interactive fiction by Adam Cadre (1999). The player character is Primo Varicella, palace minister in Piedmont, who has to get rid of several rivals for the regency following the death of the king. The game is notable for its difficulty, including an inbuilt time-limit that demands the player optimise his sequence of actions.
Varicella is a highly contagious, acute disease caused by a virus of the Herpes virus family, for which the reservoir is strictly human, varicella zona virus (VZV).
Clinical varicella is characterised by the onset of a rash, initially macular and subsequently vesicular and pruriginous, generally starting on the scalp and face; this rash may occasionally be accompanied in the early stages by fever and malaise.
Where varicella occurs in pregnant women, the foetus may be affected, presenting congenital varicella syndrome at birth with atrophy of the limbs and scarring lesions to the skin; the central nervous system and eyes may also be affected.