然而，笑想必是我们都乐意被传染的唯一传染病吧，不是么？

However, smile is the only infection we are all happy to be infected with, aren't we?

youdao

另外非洲科学家们还针对羊群中的一种传染病研制一种疫苗。正是这种传染病贻误了在曾作为非洲牧羊人主要市场的阿拉伯国家的商机。

African scientists, too, are developing a vaccine to stop sheep catching an infection that has put off Arab countries that used to be the main markets for African herders.

youdao

还有就是由于威胁生命的传染病加上不断增多的非传染病的高负担给非洲卫生系统造成的压力。

Then there is the strain on African health systems imposed by the high burden of life-threatening communicable diseases coupled with increasing rates of noncommunicable diseases.

youdao

Now the intervention studies are stronger methods than the epidemiology studies but they're also more difficult studies to do.

相比传染病学研究,干预性研究更有效,但也更难执行

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Okay, so let's talk about the example of smallpox, which is one of the world's great successes in the battle against infectious diseases.

我们现在来谈一谈天花,它是人类与传染病的斗争中,获得的一项伟大胜利

耶鲁公开课 - 生物医学工程探索课程节选

And so you can see the pneumonia, tuberculosis, the communicable diseases, infectious diseases, for the most part, are taking the most lives at that point.

你可以看到肺炎,肺结核,传染病,感染性疾病,是夺走大多数人生命的主要原因

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选