来自《耶鲁大学开放课程：生物医学工程探索 第10集 第10集》

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  For example, this effort that's described here from 2001
  比如 这个成果显示从二零零一年开始
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  where the World Health Organization has a push,
  世界卫生组织进行了一次推广活动
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  they say, we know where the cases are occurring,
  他们说道 我们知道发生病案的地点
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  we know what communities still have polio within them,
  知道在哪些人群中依旧存在小儿麻痹症
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  if we do sort of really gear up
  如果我们可以加快推动
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  for a massive immunization effort in those areas
  在那些地区的大批量免疫尝试
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  we could eliminate polio from that community.
  我们就可以消除该人群中的小儿麻痹症
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  In this way, by knowing what communities it's in
  因此 通过知晓疾病的所在群体
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  and acting on all of them at once
  并且一次性对整个群体做免疫尝试
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  you might be able to eradicate polio in the same way
  也许那就可以像根除天花那样
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  that we eradicated smallpox.
  根除小儿麻痹症
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  So far those efforts have failed
  截止目前 这些尝试