Time trends in pediatric Herpes zoster hospitalization rate after Varicella immunization

Herpes zoster (HZ) is an emerging concern for public health officials. The aim of this study was to determine whether universal Varicella immunization implemented in 2004 had an impact on HZ hospitalization in immunocompetent children in Greece. All HZ hospitalizations were recorded during the period 1999–2011. The overall attributable hospitalization rate was 13.89 cases/1000 hospital admissions (95%CI: 11.69–16.38 cases/1000 hospital admissions). HZ hospitalization rate remained unchanged during the study period. These data provide a basis for monitoring HZ hospitalization rate among children following universal toddler immunization. © 2016 Japan Pediatric Society