A persistent outbreak of varicella in a primary school in Dongguan City, Guangdong Province, China.
Jian-Ming ZhongMeng ZhangZhen-Yu HuangGui-Ping QiuFeng RaoZhi-Hui LuTian-Mu ChenQiao-Li ZhangPublished in: The Journal of international medical research (2019)
The varicella vaccine was unable to prevent virus spread even with high vaccination coverage. Delayed and inefficient isolation of cases was the primary cause of the persistent outbreak.