计划开展补充免疫活动（SIAs）提供了重要的人口统计学数据——首次在边远村庄和家庭中“发现”儿童，并在“地图上标出”他们所在的地点以便于今后的保健服务。
Planning for SIAs provides key demographic data – “finding” children in remote villages and households for the first time, and "mapping" their location for future health services.
计划开展补充免疫活动（SIAs）提供了重要的人口统计学数据——首次在边远村庄和家庭中“发现”儿童，并在“地图上标出”他们所在的地点以便于今后的保健服务。
Planning for SIAs provides key demographic data – “finding” children in remote villages and households for the first time, and "mapping" their location for future health services.
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