influenza virus type a 3 甲型流感病毒
avian influenza virus-type a a型禽流感病毒
influenza virus a type A型流感病毒
influenza a virus type 甲1型流感病毒
influenza a virus type 1 甲型流感病毒
Influenza type A H1N1 virus 甲型H1N1流行性感冒
Avian influenza virus type a has been identified as the cause, but the virus strain has not yet been determined.
禽流感A型病毒已被确认为病因，但是尚未确定病毒株。
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.
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。
Swine influenza (swine flu) is an acute viral infection of the respiratory tract in pigs caused by type A influenza virus.
猪流感是一种发生在猪身上的高度传染性急性呼吸道疾病，由A型流感病毒引起。
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