WHO is working with the Strategic Advisory group of Experts (SAGE) on Immunization and partners on the options for deciding in which target groups vaccination should begin first.
WHO在免疫接种专家策略顾问团(SAGE)的工作和选项合作决定，在疫苗接种目标组应该首先开始。
During the Week, each participating country implements activities to inform and engage key target groups, and to target critical challenges as regards immunization in their country.
在这一周期间，每一个参加国实施活动，向主要目标群体提供信息和使它们参与，并将其国家免疫方面的严重挑战作为目标。
Existing routine immunization programmes target children.
目前例行的免疫接种规划是以儿童为对象。
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