Varicella-zoster virus in children immunized with the varicella vaccine.

We present the case of a 4-year-old immunocompetent girl with varicella-zoster virus (VZV) that occurred 45 months after a single dose of the varicella vaccine. Varicella-zoster virus is rare in children, particularly those who have received the varicella vaccine. Our case illustrates the need for a continued high index of suspicion, even among vaccinated children with herpetiform rashes, for varicella reactivation or reinfection.