论文部分内容阅读
本文叙述了世界卫生组织(WHO)关于三种病毒性和两种细菌性疾病或疾病组的疫苗发展计划,以及为解决重复接种问题所提出的三种方法。
This article describes the World Health Organization (WHO) vaccine program for three viral and two bacterial diseases or disease groups and three proposed solutions to the problem of repeated inoculations.