Interferon (IFN) system is the first line of defense against virus invasion in vertebrate.

干扰素(IFN)系统是脊椎动物抵抗病毒入侵的第一道防御系统。

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The respiratory tract mucosa is not only the site of infection for influenza viruses but also the site of defense against virus infection.

呼吸道黏膜不仅是流感病毒的感染部位，也是防御病毒感染的部位。

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To conclude, USB Blocker helps you to protect your entire network (including computers) against virus attacks and prevent theft of important corporate data.

最后，US B拦截器可帮助您保护您的整个网络(包括计算机)免受病毒攻击和防止盗窃重要的企业数据。

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Frank Ruhli says studies like this can prove useful in the fight against H1N1, another form of the influenza virus.

VOA: special.2010.06.29

And so even people that got vaccinated, most of us either have questionable or no protection against the virus at this point.

所以就算那些接种过天花疫苗的人,到那时候也不一定,或者压根无法抵御病毒

耶鲁公开课 - 生物医学工程探索课程节选

The WHO's Director-General,Margaret Chan, has expressed concern there is not a good process in place to produce enough vaccine against the virus.

VOA: special.2009.08.18

Why take the time to defend yourself against a virus that does no real harm?

CNN: From the Web

But she warned members of the public to be on their guard against the virus.

BBC: Flu rate 'at record low'

Scientists have been working to develop a vaccine which will be effective against the virus for some time.

BBC: NEWS | Health | Diarrhoea vaccine 'a step closer'