1. Guidance for Issuing Varicella-Zoster Immunoglobulin (VZIG);Public Health England (PHE),2017
2. Loss of vaccine-Induced immunity to varicella over time;Chaves;NEJM,2007
3. A review of the varicella vaccine in immunocompromised individuals;Sartori;Int. J. Infect. Dis.,2004
4. Impaired antibody memory to varicella zoster virus in HIV-infected children: low antibody levels and avidity;L'Huillier;HIV Med.,2012
5. NOMIS Mortality Statistics,2016