现在还没有防艾滋病病毒传染的疫苗。
然而，展望未来时，我们首先问他一种预防传染的疫苗前景如何。
Looking to the future, though, we asked him what the prospects are for a vaccine to prevent infection in the first place.
就像流感一样，一个人的情绪状态是可以传染的。
我的感冒想必是你传染的。
没有接触传染的风险。
在大多数情况下，人类粪便施用于谷物作物上，这些作物最终经过烹煮，从而最大程度地减少了因水传染的疾病的传播风险。
In most cases, the human waste is used on grain crops, which are eventually cooked, minimizing the risk of transmitting water-borne diseases.
所以我猜想，笑是可以传染的。
他们的行为才是真正会‘传染的’。
勤洗手是避免疾病传染的有效方法之一。
Washing hands often / frequently / regularly is one of the effective ways to avoid being infected by disease(s).
也会使得你更开心，因为情绪是相互传染的。
Which tends to make you even happier, since emotions are contagious.
闲情雅致是会传染的。
他们的行为才是真正会‘传染的’。
这有助于降低母婴传染的几率。
This has helped to reduce rates of mother-to-child transmission dramatically.1.
微笑- - -微笑真的是会传染的。
那么，如果幸福是会传染的，你不想去抓住它么？
Now if happiness is contagious, don't you want to put yourself in a position to catch it?
我们现在有一种过分注意传染的心理倾向。
We now have this psychological tendency to over-detect contagion.
这不是表明情绪如同病毒一样可以传染的第一个证据。
This isn't the first evidence that emotions can spread like a virus.
这些观念是可传染的。
These are just a few of the ideas that are to die for. They're infectious.
而且外界对金融传染的恐惧本已使市场反常波动。
And fears of financial contagion have made the markets unnaturally volatile.
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?
(疾病控制中心)称洗手是防止细菌传染的最佳方式。
Handwashing is the best way to avoid spreading infection, according to the CDC.
这样的睡眠是会传染的——哪怕隔着一堵厚墙它也传染。
Such sleep is contagious — even through a thick wall it is contagious.
根据最近一项研究表明，不论是好的还是坏的行为都似乎会传染的。
According to a recent decades long study, behaviors both good and bad are actually contagious.
这证实了之前的调查，该调查说长胖可能是社会性传染的。
This confirms previous research that gaining weight may be socially contagious.
这证实了之前的调查，该调查说长胖可能是社会性传染的。
This confirms previous research that gaining weight may be socially contagious.
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