It just takes time to infect someone.

它只是需要时间去传染给一个人。

That's enough to infect half a million people.

那足够感染五十万人口了。

This requires viruses to infect living organisms.

这需要病毒感染生物体。

Then, essentially, one person goes on to infect three people.

之后，基本上是一个人感染了三个人。

Viruses are constantly encountering new species and attempting to infect them.

病毒不断遇到新物种并试图感染它们。

Almost 50,000 health staff are known to have been infected.

已知有近5万医护人员被感染。

They inject a virus into the brain to infect the tumors.

医生们将一种病毒注射进大脑来感染肿瘤。

It is the deadliest kind of Ebola known to infect humans.

扎伊尔型埃博拉病毒是已知感染人类的最为致命的埃博拉病毒。

He is the latest senior Kremlin figure to be infected.

他是克林姆林宫近期被感染的资深官员。

And it said over 130 people are thought to be infected.

据说还有130多人感染此病。

Just one person is likely to infect between 12 and 18 people.

仅一个人就可以传染12~18人。

Many of the detainees are said to have been infected by coronavirus.

许多被拘留者据说已经感染了冠状病毒。

They have the capacity to infect, cause serious reactions, and sometimes fatal reactions.

它们有能力感染，引起严重的反应，有时甚至是致命的反应。

It says up to a million computers worldwide are thought to be infected.

司法部称全世界有一百万台电脑已经被入侵。

It is possible for people to be infected through contact with contaminated objects.

人们有可能通过接触受污染的物体而受到感染。

There are also more than a million people known to have been infected worldwide.

此外 全世界已知有100多万人受到感染。

And that's basically how many people an infected person goes on to infect themselves.

大意就是已感染者可继续感染的人数。

This expanded the list of animals known to have been infected with the sickness.

这扩大了已知感染这种疾病的动物的名单。

People who provide care to infected individuals are at highest risk of contracting the virus.

为感染者提供护理的人员感染这种病毒的风险最高。

The researchers analyzed children born to infected women in Puerto Rico and other U.S. territories.

研究人员分析了美属波多黎各等其它美国领土儿童，他们的母亲都感染了寨卡病毒。