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。

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.

youdao

被称为“猪流感”的病毒是一种新的甲型H1N 1流感病毒株。墨西哥的感染和死亡人数最多。

Mexico has the highest number of deaths and infections of the flu, which is caused by a new strain of the influenza a H1N1 virus.

youdao

有三种类型的季节性流感——甲型、乙型和丙型。 根据病毒表面蛋白不同的种类和结合情况，甲型流感病毒又进一步分类为亚型。

There are three types of seasonal influenza – A, B and C. Type A influenza viruses are further typed into subtypes according to different kinds and combinations of virus surface proteins.

youdao