An Outbreak of Highly Pathogenic Avian Influenza in Australia in 1997 Caused by an H7N4 Virus
作者： P. W. Selleck , G. Arzey , P. D. Kirkland , R. L. Reece , A. R. Gould
DOI: 10.1637/0005-2086-47.S3.806
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摘要: In November of 1997 an outbreak highly pathogenic avian influenza occurred near the town 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 RKRKRG and intravenous pathogenicity indices 2.52 2.90, respectively. A virus identical nucleotide sequence, but index 1.30, was also cloacal swabs collected asymptomatic emus kept a third property.
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