与每年的流感疫苗不同的是，这种新疫苗提前上市了。
The new vaccine, which is different from the annual flu vaccine, is available ahead of expectations.
在很少一些案例中，人类因与猪密切接触而感染猪流感。
In rare cases, humans contract swine flu from close contact with pigs.
那么是不是所谓的猪流感真的仅仅不过是又一个与养殖场有关的环境问题呢？
So is so-called swine flu really just another environmental problem associated with factory farming?
人(背景，右)与禽(背景，左)流感病毒结合会导致更为严重的症状。
Human (background, right) and bird (background, left) flu viruses combine to make worse symptoms.
H 1 N 1猪流感病毒与H1N1人流感病毒是一样的吗？
与甲型和乙型流感病例相比，丙型流感病例发生较少。
Type C influenza cases occur much less frequently than A and B.
同是疫病威胁，猪流感与禽流感相比如何？
How does swine flu compare with avian flu as a pandemic threat?
这种猪流感病毒的遗传物质组成与研究人员曾经遇到了任何一种都不一样。
The genetic make-up of this swine flu virus is unlike any that researchers have seen.
与流感病毒相似，计算机病毒也能传给全世界。
Like the flu virus, a computer virus can spread all over the world.
目前感染人的猪流感病毒与猪之间的病毒是一样吗？
与病禽(近距离)接触是人类感染(禽流感)的常见原因。
Contact with sick fowl is the most common cause of human infection.
猪流感与猪猪流感在猪群中如何传播？
卫生专家表示，他们认为人感染禽流感是因为与病禽接触。
Health experts say they believe people are becoming infected after a contact with sick birds.
与纽约的情况一样，许多中国人对猪流感的到来感到焦虑。
As in New York, many Chinese are unsettled by the arrival of swine flu.
与对其它大多数疾病的免疫不同，对流感的免疫只是临时的。
Unlike immunity to most other diseases, immunity to influenza is fleeting.
大多数致命的流感病毒株在动物病毒与一种已存在的人类病毒结合的时候产生。
Most deadly flu strains emerge when an animal virus combines with an existing human virus.
大多数致命的流感病毒株在动物病毒与一种已存在的人类病毒结合的时候产生。
Most deadly flu strains emerge when an animal virus combines with an existing human virus.
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