甲型流行性感冒(Influenza type A),简称流感,是由甲型流行性感冒病毒(Influenza A viruses)引起的急性呼吸道传染病。近百年来,已发生多起世界性大流行,夺取了数千万人的生命。流感病毒广泛存在于各种鸟类,感染多种动物,通过动物体内基因重配或突变,创造出适应人类受体的新型? Influenza type A, or influenza, is an acute respiratory infection caused by Influenza A viruses. Over the past century, there have been more world-wide pandemics that have claimed the lives of tens of millions of people. Influenza virus is widespread in a variety of birds, infected with a variety of animals, through animal genetic reassortment or mutation, to create a new type of adaptation to human receptors?