猪流感是什么?

　　　　和人一样,猪也会得流感.有4种不同的A型猪流感病株常在猪之间传播 .最近几种猪流感病毒属于H1N1和H3N2亚型.猪罹患流感后一般不会致死.最新爆发的这种感染人类的猪流感病毒很不同寻常.它有可能已从猪,鸟和人流感病毒中获取了基因片断.并且已从本来不会在北美出现的欧亚猪流感毒株类型里获取了基因.

　　　　What Is Swine Flu?

　　　　Like humans, pigs get the flu. Four different type A swine flu strains commonlycirculate among pigs. Most recent swine flu viruses have belonged to the H1N1 and H3N2 subtypes. Pigs typically get sick but usually don't die from swine flu.

　　　　The new swine flu virus infecting humans is very unusual. It's somehow acquired genes from swine, bird, and human flu bugs. And it's also got genes from Eurasian swine flu viruses that aren't supposed to be in North America.