虽然数量很少，H5N1和其它禽流感病毒在人与人之间的有限传播事例毕竟伴随家禽疫情发生了，但这无须惊慌。
Though rare, instances of limited human-to-human transmission of H5N1 and other avian influenza viruses have occurred in association with outbreaks in poultry and should not be a cause for alarm.
但是它们的细胞不会再大量复制出上百亿的禽流感病毒，所以其它的家禽不会被感染。
But their cells don't spew forth zillions of copies of flu viruses - so nearby poultry don't get sick.
目前在若干亚洲国家发生的家禽和其它鸟类中高致病性禽流感病毒的暴发造成引发人类流感大流行的最大威胁。
Currently, the outbreaks of a highly-pathogenic avian influenza virus in poultry and other birds in several Asian countries pose the greatest threat of sparking a human influenza pandemic.
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