如果每头猪的内脏都是培养皿，那么可能的大流行性流感病毒已经在养猪场熬了几十年了。
If the innards of each pig are Petri dishes, then possible pandemic flu viruses have been stewing on hog farms for decades.
研究者发现，猪流感病毒比普通流感在肺更深部结合，这可以解释为什么它有时是致命的原因。
Researchers discover that the swine flu virus binds far deeper in the lungs than ordinary flu, possibly explaining why it is sometimes fatal.
哈里是流感病毒，是个危险的小家伙。
任何人一旦被检测出感染H7N9禽流感病毒，都将得到政府资助的免费治疗。
Anyone, once tested positive for H7N9 flu virus, will receive free medical treatment from our government.
流感病毒在世界上所有地方传播。
白鼬特别容易受到流感病毒的袭击。
候鸟是否传播高致病性禽流感病毒？
Do migratory birds spread highly pathogenic avian influenza viruses?
流感病毒有时确实会变得更加厉害。
过去的猪流感病毒只是小规模爆发。
The latest swine flu virus is different from those that have caused these more minor outbreaks in the past.
乌克兰流感病毒的鉴定正在进行。
不会，猪流感病毒不会通过食物传播。
初步检验已查明h 5亚型禽流感病毒。
Initial tests have identified the H5 subtype of avian influenza virus.
禽流感病毒在气温转为凉爽时变得更为活跃。
Avian influenza viruses become more active when temperatures turn cooler.
只有A型流感病毒可造成大流行。
在伦敦·米尔·希尔分离到第一株人流感病毒。
The first human flu virus is isolated at Mill Hill in London.
他们把这三株小鼠全部感染了致死剂量流感病毒。
They infected all three strains of mice with lethal doses of influenza virus.
流感病毒是恶名昭著的，它变化迅速、行为叵测。
Influenza viruses are notorious for their rapid mutation and unpredictable behaviour.
实验室检测已经确认感染了H5N1禽流感病毒。
Laboratory tests have confirmed infection with the H5N1 avian influenza virus.
然而，专家们也不能确定多少流感病毒能让人感染。
However, experts are uncertain as to what constitutes an infective dose when it comes to influenza viruses.
它们很可能携带流感病毒，几百年都不发生明显危害。
They have probably carried influenza viruses, with no apparent harm, for centuries.
流感病毒的区别是它们每一到五年就会有很大的变异。
The difference with influenza viruses is they undergo a dramatic change every one to five years.
举例来说，禽类就没有人类流感病毒的受体。
Birds, for example don't have receptors for human strains of the flu.
血凝素是一种病毒蛋白，能帮助流感病毒侵入宿主细胞。
Hemagglutinin is a viral protein that enables the flu virus to enter host cells.
在极少数情况下，禽流感病毒已跨越物种屏障，感染人类。
On rare occasions, avian influenza viruses have crossed the species barrier to infect humans.
流感病毒通常都有规律地变异，可以随时产生对药物的抗药性。
Flu viruses mutate regularly and can develop resistance to drugs at any time.
去年发表的论文提供了证据表明流感病毒在热带地区混合与突变。
Papers published last year provide evidence that influenza viruses mix and mutate in the tropics.
流感病毒令人惊奇的强大，但它不聪明，聪明的是我们。
Influenza viruses have the great advantage of surprise on their side. But viruses are not smart.
她估计，单是狗流感病毒，就会使5%染上狗流感的狗死掉。
She estimates that by itself, it kills 5 percent of the dogs that catch it.
有的研究员正在检测纽约流感病毒，有的在检测非洲流感病毒。
Some researchers were examining New York flu, others African colds.
有的研究员正在检测纽约流感病毒，有的在检测非洲流感病毒。
Some researchers were examining New York flu, others African colds.
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