Given the amount of effort and funds needed to launch a targeted - let alone a blanket - immunization programme at the global level, sentinel sampling is not enough.
考虑到为启动有针对性的——权且不提地毯式的——全球级免疫规划所需的努力和资金，单靠哨点抽样是不够的。
Given the amount of effort and funds needed to launch a targeted - let alone a blanket - immunization programme at the global level, sentinel sampling is not enough.
考虑到为启动有针对性的——权且不提地毯式的——全球级免疫规划所需的努力和资金，单靠哨点抽样是不够的。
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