来自《耶鲁大学开放课程：1600年后西方社会的流行病 第6集 第6集》

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  body's immune response, determine the severity and type
  迅速作出回应 试图确定入侵病毒的严重程度
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  of the disease.
  以及具体种类
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  Onset is sudden,
  开始的很突然
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  with fever of 100 to 102 degrees,
  会伴有37.8至38.9度高烧
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  and a general malaise.
  同时出现周身不适
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  This, then, is the beginning of perhaps a month of excruciating
  这些 仅仅是持续一个月极度痛苦
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  suffering and the danger of spreading contagion.
  并且高度传染的一个开端
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  The early symptoms are fever,
  早期症状为 发烧
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  vomiting, severe backache,
  呕吐 强烈的背痛
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  splitting frontal headache,
  前额疼得要炸开一样
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  and in children sometimes convulsions.
  儿童有时候会伴有抽搐症状
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  Sometimes the disease is so overwhelming that it leads to
  有时候病如山倒 从而引发