It first infects you because you breathe in some of the infectious agents.

只要吸入病原体，你就会被感染。

These are cells of the type that HIV infects.

而这些细胞正是艾滋病毒感染的那一类细胞。

Where prevention efforts decline, HIV infects more people.

预防努力退步，艾滋病毒就会感染更多的人。

Cytomegalovirus (CMV) is a virus that infects the whole body.

巨细胞病毒(CMV)是一种可以感染全身的病毒。

You catch a cold when a virus infects your upper respiratory system.

当上呼吸系统感染了病毒，人就会得感冒。

Cryptococcosis is caused by a fungus that primarily infects the brain.

引起隐球菌病的真菌主要感染大脑。

We know that the novel H1N1 virus preferentially infects younger people.

我们知道这种新的H1N1病毒更多地感染年轻人。

Acanthamoeba is a bacteriophage, a class of virus that infects bacteria.

a canthamoeba是噬菌体的一种。噬菌体是一类专门感染细菌的病毒。

Neisseria meningitidis only infects humans; there is no animal reservoir.

脑膜炎奈瑟菌仅感染人类，不存在动物宿主。

The parasite infects approximately one-third of the world's human population.

这种寄生虫感染了全世界将近三分之一的人口。

It infects more than 500 million people per year and kills more than 1 million.

该病每年感染5亿多人并造成100多万人死亡。

But it doesn't seem that way because the role infects how we think about the person.

但人们并不这样认为，因为这个角色影响了我们对这个人的看法。

Scientists are therefore keeping watch to see if H5N1 infects other animals besides birds.

因此科学家密切关注禽流感是否感染禽以外的其他动物。

This microbe infects the brain and can cause headache, confusion, motor weakness and fever.

这种微生物可以感染脑部，引起头痛，精神错乱，虚弱和发烧。

In these patients, the virus directly infects the lung, causing severe respiratory failure.

病毒直接感染这些病人的肺部，造成严重呼吸衰竭。

Once it finds the right password, it infects the next computer, which joins the attacking ranks.

一旦它找到正确的密码，它感染的下一台电脑即加入到攻击的行列中。

A team of scientists has resurrected a key portion of the virus and determined how it infects cells.

一些科学家重新挖掘出病毒的一些重要部分，并确定该病毒如何感染细胞。

The Stuxnet worm, a piece of software that infects industrial-control systems, is remarkable in many ways.

Stuxnet蠕虫，一种可以感染工业控制系统的软件，其在很多方面都值得我们注意。

Unlike falciparum, vivax infects only the youngest red blood cells, those freshly emerged from bone marrow.

与疟原虫不同，间日疟原虫只感染刚刚从骨髓中分化出来的年幼血红细胞。

The recent research found that the parasite infects the amygdala, a region associated with emotional states.

最近的研究发现这种寄生虫感染了大脑中的扁桃核区域，这一区域与情绪状态有关。

The virus infects the fatty tissue and increases replication, differentiation, and accumulation of fat cells.

该病毒会感染脂肪组织，然后复制、分化、积累脂肪细胞。

The discovery of a virus that infects other viruses also raised the debate about whether or not a virus is alive.

“病毒感染病毒”这项发现同时也助长了关于病毒是否是生物的争论。

This risk takes on added significance for a virus, like this one, that preferentially infects younger people.

这种风险对类似当前的病毒具有更大的重要性，因为这种病毒尤其感染较年轻的人群。

The human immunodeficiency virus (HIV) infects cells of the immune system, destroying or impairing their function.

人类免疫缺陷病毒(HIV，也称艾滋病毒)感染免疫系统细胞，破坏或损伤其功能。

Categorizations of malware are usually driven by how it infects, how it spreads, or what it modifies to hide or persist.

我们通常按照感染方式、传播方式或者它试图通过修改来隐藏或保存自身的文件类型来分类黑客软件。

Plasmodium vivax, the world's most common malara parasite, now infects people previously considered to be resistant.

间日疟原虫，世界上最常见的疟疾寄生虫，现在传染到了以前被认为拥有抵抗力的人们身上。