1997年在澳大利亚爆发了由H7N4病毒引起的高致病性禽流感。

An outbreak of highly pathogenic avian influenza in Australia in 1997 caused by an H7N4 virus.

作者信息

Selleck P W, Arzey G, Kirkland P D, Reece R L, Gould A R, Daniels P W, Westbury H A

机构信息

CSIRO Australian Animal Health Laboratory, 5 Portarlington Road, Geelong, 3220, Victoria, Australia.

出版信息

Avian Dis. 2003;47(3 Suppl):806-11. doi: 10.1637/0005-2086-47.s3.806.

DOI:10.1637/0005-2086-47.s3.806

PMID:14575068

Abstract

In November of 1997 an outbreak of highly pathogenic avian influenza occurred near the town of Tamworth, in northern New South Wales, Australia. The viruses isolated from chickens on two commercial chicken farms were identified as H7N4 viruses, with hemagglutinin cleavage site amino acid sequences of RKRKRG and intravenous pathogenicity indices of 2.52 and 2.90, respectively. A virus with an identical nucleotide sequence, but with an intravenous pathogenicity index of 1.30, was also isolated from cloacal swabs collected from asymptomatic emus kept on a third property.

摘要

1997年11月，澳大利亚新南威尔士州北部塔姆沃思镇附近爆发了高致病性禽流感。从两个商业养鸡场的鸡身上分离出的病毒被鉴定为H7N4病毒，其血凝素裂解位点氨基酸序列为RKRKRG，静脉致病性指数分别为2.52和2.90。从第三个养殖场无症状鸸鹋的泄殖腔拭子中也分离出一种核苷酸序列相同但静脉致病性指数为1.30的病毒。