Looking to the future, though, we asked him what the prospects are for a vaccine to prevent infection in the first place.

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。

《柯林斯英汉双解大词典》

Hand washing is an easy way to prevent infection.

洗手是预防传染病的一个简单方法。

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But those antibodies do not totally prevent infection.

但是，那些抗体并不能完全预防感染。

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vaccine has shown some ability to prevent infection.

VOA: special.2009.09.30

If they had, they would have been tested to see if they needed treatment to prevent an infection like H.I.V.or hepatitis.

VOA: special.2010.02.10

There are no medications to treat West Nile virus or vaccines to prevent infection.

CNN: West Nile virus on the rise in the U.S., health officials say

Influenza vaccine will only prevent infection 60% to 70% of the time, in the best of cases.

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But the argument has been made that vaccinations should start even earlier to be sure to prevent infection.

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