按照在禽类群体中的致病力，可将禽流感病毒分为两类：高致病性或低致病性。

AI viruses are divided into two groups based on their ability to cause disease in poultry: high pathogenicity or low pathogenicity.

youdao

野生鸟类，特别是水鸟是低致病性禽流感病毒生态学的关键因素。

Wild birds, particularly waterfowl, are a key element of the viral ecology of low pathogenic avian influenza.

youdao

野生鸟类，特别是水鸟是低致病性禽流感病毒生态学的关键因素。

Wild birds, particularly waterfowl, are a key element of the viral ecology of low pathogenic avian influenza.

youdao