当这一现象发生时应注意识别，并对推荐的免疫接种程序做出相应的调整。
It is important to recognize when this phenomenon occurs and to adjust the recommended immunization schedule accordingly.
本文介绍2008年美国0 ~18人员推荐免疫程序及其主要变化，从而为旅行者预防接种提供参考和借鉴。
This paper introduced the recommended immunization schedule for persons aged 0 ~ 18 years old in the United States in 2008 which can provide the reference for the traveler's vaccination.
本文介绍2008年美国0 ~18人员推荐免疫程序及其主要变化，从而为旅行者预防接种提供参考和借鉴。
This paper introduced the recommended immunization schedule for persons aged 0 ~ 18 years old in the United States in 2008 which can provide the reference for the traveler's vaccination.
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