Alexander D J
Vet Rec. 1982 Oct 2;111(14):319-21. doi: 10.1136/vr.111.14.319.
During 1980 and 1981 influenza A viruses of subtypes H3N2, H3N8, H4N1, H4N6, H6N2, H6N8, H7N7, H11N8 and H11N9 were isolated from birds in Great Britain, usually as a result of investigations of disease or death. However, all viruses were shown to be of low virulence for chickens in pathogenicity index tests. There was one occurrence of influenza virus infection of turkeys (H6N8) but viruses were frequently obtained from domestic ducks. Other viruses were isolated from exotic birds in zoos or bird collections.
1980年至1981年间，在英国从鸟类中分离出了H3N2、H3N8、H4N1、H4N6、H6N2、H6N8、H7N7、H11N8和H11N9亚型的甲型流感病毒，通常是在对疾病或死亡情况进行调查时分离得到的。然而，在致病性指数试验中，所有病毒对鸡的致病性都很低。有一次火鸡感染了流感病毒（H6N8），但病毒经常从家鸭中分离得到。其他病毒则是从动物园或鸟类收藏中的外来鸟类中分离出来的。
