来自《耶鲁大学开放课程：有关食物的心理学、生物学和政治学 第12集》

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  so you all have heard this,
  所以你们可能听过了
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  but it's a very interesting start.
  但这真的是个很有趣的开始
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  Certainly, the concept of public health goes back
  当然 公共卫生的概念
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  well before this particular event that I'm going to talk about,
  在这件事发生之前就有了
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  but this event was pretty noteworthy,
  但这个事件很值得注意
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  and it led to the classic start of modern epidemiology.
  它是现代流行病学的起源
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  In August of 1854
  在1854年的八月
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  there was a tragic outbreak of cholera in London,
  在伦敦霍乱的爆发成了一场悲剧
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  and many people were getting sick
  很多人都得了霍乱
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  and losing their lives because of it.
  并因此死亡
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  The prevailing theory out there was called the Miasma Theory,
  当时盛行的说法是瘴气理论
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  and that had to do with spontaneous generation.
  认为导致霍乱的原因是自然发生的