This year’s seasonal vaccine contains three influenza viruses — one A (H3N2) virus, one regular seasonal A (H1N1) virus unrelated to the swine flu strain and one B virus.

今年的季节流感疫苗含有三种流感病毒——一种甲型（H3N2）病毒，一种与猪流感毒株无关的常规季节性甲型（H1N1）病毒，以及一种乙型病毒。

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In late April, WHO announced the emergence of a novel influenza a virus.

在4月下旬，世卫组织宣布出现一种新的甲型流感病毒。

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The Ministry of Health of Indonesia has announced a confirmed case of human infection with avian influenza a (H5N1) virus.

印度尼西亚卫生部宣布发生了一起新的人感染甲型H5N1禽流感病毒确诊病例。

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The World Health Organization will not declare an influenza pandemic unless a virus becomes widespread in at least two areas of the world.

VOA: special.2009.05.06

So, this is a cell that's infected with a microorganism, it's infected with a virus, let's say it's infected with influenza virus.

这是一个感染了微生物的细胞,它感染了一种病毒,就说是感染了流感病毒吧

耶鲁公开课 - 生物医学工程探索课程节选

Swine flu is a respiratory sickness caused by an influenza virus that mainly infects pigs.

VOA: special.2009.04.29

The virus that is contagious between humans does not yet exist (or it may just have come into being inside a young person in China who contacted both vH7N9 and a human influenza A virus to which they were not immune).

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Swine flu is a respiratory disease which is caused by a strain of the influenza type A virus known as H1N1.

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It is caused by a type-A influenza virus.

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