Varivax III is a live attenuated vaccine against varicella zoster virus (VZV). We report a case of recurrent vaccine-strain herpes zoster in an immunocompetent 2-year-old child. Vaccine-strain VZV was identified through polymerase chain reaction. This report aims to alert physicians that recurrent vaccine-strain herpes zoster can be a rare complication of VZV vaccination in apparently immunocompetent hosts.
From *The Hospital for Sick Children, Toronto, ON; and †The National Microbiology Laboratory, Winnipeg, MB, Canada.
Accepted for publication February 26, 2008.
Address for correspondence: Raymond Tellier, MD, MSc, Division of Microbiology, Pediatric Laboratory Medicine, The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8, Canada. E-mail: firstname.lastname@example.org.