Exotic newcastle disease is a bird virus found in many parts of the world . many kinds of birds carry it . but it especially affects chickens and a few others 异国情调新城疫是一种鸟类病毒的发现,在世界许多地方。许多种鸟类进行的。但尤其影响到鸡和其他几个。
But most of all , everyone worried about the implications for human health of what is ? though it has indeed claimed some human victims ? still basically a bird disease 但人们最担忧的是这背后对人类健康的启示:当禽流感已经夺去数人的生命,它还能只算作一种鸟类疾病吗?
The h5n1 virus remains mainly a virus of birds but experts fear it could change into a form easily transmitted from person to person and sweep the world , killing millions H5n1主要仍是一种鸟类病毒,但是专家们害怕它可能改变成一种易于在人间传播的病毒,从而在世界肆虐,杀死数百万人。