NavGeneral InfoEmail Print Original or alternative title Vaccine Introduction by Antigen Provider World Health Organization (WHO)Tabulations only Geography Global Coverage type Global Time period covered 01/2000 - 12/2022 Series or system WHO Immunization Data Portal WHO Immunization Data Portal - Introduction of Varicella Vaccine Data type Epi surveillance Keywords Immunization, Varicella Citation Contributors World Health Organization (WHO) Publisher World Health Organization (WHO) Suggested citation World Health Organization (WHO). WHO Introduction of Varicella Vaccine 2000-2022. Geneva, Switzerland: World Health Organization (WHO). GHDx Entry last modified on: Jan 9, 2025