Influenza a, B and c, three separate strains of the virus, cause the flu.
三种不同的流感病毒流感A型、流感B型和流感C型都能引起流感。
The pandemic threat is the h-five none influenza virus, also known as the bird flu.
具有大流行威胁的是H5N 1流感病毒，也就是禽流感。
The influenza, known as swine flu, has alienated pigs across the world.
甲型H1N 1流感起初被称为“猪流感”，让世界各地的人们对猪敬而远之。
The influenza, known as swine flu, has alienated pigs across the world.
甲型H1N 1流感起初被称为“猪流感”，让世界各地的人们对猪敬而远之。
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