DARWIN EU® - Encephalitis risk in pediatric varicella vaccine recipients

Study type

• Study type:
  Non-interventional study

Study design details

• Main study objective:
  1. To describe the vaccine uptake of V/MMRV by vaccine type, dose, brand, country, and to describe the characteristics of vaccine recipients.; 2. To describe the background rates of encephalitis in the general paediatric population, and to estimate the crude incidence rates of encephalitis following varicella infection/chickenpox diagnosis.; 3. To assess the association between V/MMRV vaccines and varicella infection (chickenpox) with encephalitis among children and adolescents aged 9 months to 18 years by age group and country