Influenza viruses are not stable things.

流感病毒很不稳定。

Human beings contract the flu through contact with the influenza virus.

咱们人呢，得流感就是因为感染了流感病毒啦。

It collects records of genetic information on influenza viruses and releases them to the public.

它收集流感病毒基因信息的相关记录，然后向公众发布。

By contrast, the entry molecules preferred by influenza viruses are almost exclusive to the upper respiratory tract.

相比之下，流感病毒首选的进入分子几乎只存在于上呼吸道。

The influenza virus responsible for the 1918 pandemic was identified as being a Type A, H1N1 subtype.

导致1918年大流行的流感病毒被确定为A型H1N1亚型。

Every year, all over the world, thousands of influenza viruses are being taken from patients, and sequenced.

世界各地每年都会从病人身上采集成千上万的流感病毒，并对其测序。

They found that when influenza virus is left on paper tissues, those papers can give off particles of the virus.

他们发现流感病毒落在纸巾上时，这些纸巾可以传播携带病毒的颗粒。

“H7” and “N9” refer to particular types of two proteins, haemagglutinin and neuraminidase, that help influenza viruses invade host cells.

“H7”和“N9”是指两种蛋白质，血凝素和神经氨酸苷酶，这两种成分使得流感病毒可以入侵宿主身体细胞。

Believe it or not, thousands and thousands of people have actually lost their lives due to the unpredictability of the influenza virus.

不管你信不信，成千上万的人因为没有预见的流行性病毒的变异形成的流感失去了他们的生命。

During the first sweep of the Spanish Lady, the influenza virus probably went through a mutation process which made it much deadlier.

病毒开始在西班牙爆发时发生了变异，变得更加致命。

Well, recently, my colleagues and I designed constrained peptides that neutralize influenza virus, protect against botulism poisoning and block cancer cells from growing.

最近，我和同事们设计出了能消除流感病毒、能防止肉毒杆菌中毒、能抑制癌细胞增长的限制性肽。

Even in your own body, if you are infected with an influenza virus today, you're not going to be infected by one virus.

即使是你的身体，如果你今天感染了流感病毒，你也不会仅被一种病毒所感染。

The influenza virus that caused it was much stronger than previous influenza viruses.

引起它的流感病毒比以前的流感病毒强得多。

The researchers identified three genes they believed were important for the bird flu (formally known as avian influenza) virus to reproduce in the chickens.

研究人员确定了三个他们认为对禽流感病毒在鸡体内繁殖很重要的基因。

Once inside her body, influenza virus hopes to hit an epithelial cell.

一旦进入她的体内， 流感病毒就会攻击上皮细胞。

At other times, a disease might already be spreading rapidly from person to person, as in the case of influenza viruses, which cause flu outbreaks.

在其他时候，一种疾病可能已经在人与人之间迅速传播，比如导致流感暴发的流感病毒。

These viruses are the same ones that cause the common cold like rhinovirus, coronavirus, influenza virus, respiratory syncytial virus- or RSV for short, and parainfluenza virus.

这些致病病毒与导致普通感冒的病毒相同，如鼻病毒、冠状病毒、流感病毒、呼吸道合胞病毒（简称RSV）以及副流感病毒。

First, there are more than 100 subtypes of the influenza virus, and the ones in circulation change from season to season.

首先， 流感病毒有100多种亚型，流行的亚型随季节变化。

Even though the influenza virus invades human cells really quickly, it can take a day or two before you'll feel sick.

尽管流感病毒侵入人体细胞的速度非常快，但您可能需要一两天的时间才会感到不适。

The influenza virus then makes its way through your respiratory passages, in rare cases, reaching all the way to the bottom of the lungs, and leading to severe pneumonia.

然后流感病毒通过呼吸通道，在罕见的情况下，会一直延伸至肺的底部，导致严重的肺炎。