Varicella may refer to: Chickenpox, a disease caused by infection with varicella zoster Varicella vaccine, a vaccine that protects against chickenpox and shingles Varicella zoster virus, a virus that causes chickenpox and shingles Varicella (video game), a 1999 video game Varicella, a snail genus in the family Oleacinidae See also Chickenpox (disambiguation) Simian varicella virus