流感病毒能感染多种动物宿主,包括野禽、家禽、哺乳动物等,当然也包括我们人类,它能变异组合成上百种不同的病毒,在不同的宿主之间传播.一旦一种新的动物流感病毒获得在人群中有效传播的能力,就会造成流感大流行.历史上发生过数次流感大流行,离我们最近的一次是2009年的甲型H1N1流感大流行.该病原是一种新的猪流感病毒,传入人群之后导致了全球的流感大流行.因此任何 Influenza virus can infect a variety of animal hosts, including wild birds, poultry, mammals, etc., of course, including our human beings, it can mutate into hundreds of different viruses, spread between different hosts once a new animal The ability of the flu virus to spread effectively in the population can cause a pandemic, which has occurred several times in history, the most recent of which was the Influenza A (H1N1) pandemic of 2009. The pathogen is a new Of the swine flu virus that has led to the global influenza pandemic since it was introduced into the population