于2002年开始在瓦希古亚卫生区开展婴儿例行免疫接种活动。据报，截至2007年底，扩大免疫规划（EPI）覆盖率为85.3%。

The routine infant immunization in the health district of Ouahigouya started in 2002 and the reported Expanded Program on Immunization (EPI) coverage at the end of 2007 was 85.3%.

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全球来讲，自1974年世界卫生组织开展扩大免疫规划以来，接种率已经显著提高。

Globally, coverage has greatly increased since WHO's Expanded Programme on Immunization began in 1974.

youdao

全球来讲，自1974年世界卫生组织开展扩大免疫规划以来，接种率已经显著提高。

Globally, coverage has greatly increased since WHO's Expanded Programme on Immunization began in 1974.

youdao