Objective A 2-dose varicella vaccine immunization strategy has been implemented in many
cities in China, but there is few evidence on a long-term evaluation of the efficacy of the 2 …

Objective The varicella vaccine is not included in the national childhood immunization
schedules in China. Varicella epidemics and outbreaks are frequently reported, and the …

We analyze the epidemiological characteristics of varicella and breakthrough cases in Qing
Yang City, Gansu Province, and provide a basis for the formulation of varicella prevention …

Abstract Background In South Korea, the National Immunization Program has included one-
dose varicella vaccination for 1-year-olds since 2005. This study examines the potential …

Background The benefits of improving coverage and timeliness of varicella vaccination need
to be quantified in countries where varicella vaccine (VarV) has not yet been included in …

Objective Varicella, a highly contagious viral disease caused by the varicella-zoster virus
(VZV), affects millions globally, with a higher prevalence among children. After the initial …

Background The introduction of varicella vaccination has significantly reduced the burden of
chickenpox in many countries, but outbreaks still occur in populations with high vaccination …