1. Varicella zoster virus infection: clinical features, molecular pathogenesis of disease, and latency;Mueller;Neurol Clin,2008
2. VZV: pathogenesis and the disease consequences of primary infection;Moffat,2007
3. Varicella (Chickenpox), Center for Disease Control and Prevention CDC, [accessed 14 May 2020] https://www.cdc.gov/chickenpox/about/transmission.html.
4. Jane F Seward, Mona Marin, Varicella Disease Burden and Varicella Vaccines On behalf of the SAGE VZV Working Group, WHO SAGE Meeting April 2, 2014, CDC Immunization https://www.who.int/immunization/sage/meetings/2014/april/2_SAGE_April_VZV_Se ward_Varicella.pdf?ua=1.
5. Sero-epidemiology of varicella;Munech;J Infect Dis,1986