Pathogenicity for chickens of avian influenza viruses isolated from whistling swans and a black-tailed gull in Japan

We isolated 24 Hav1 Neq1 and 18 Hav6 Nav3 influenza viruses from such free-living wild waterfowl as whistling swans, black-tailed gulls, and tufted ducks in western Japan in 1980. Two Hav1 Neq1 viruses isolated from a whistling swan and a black-tailed gull and a Hav6 Nav3 virus from a whistling swan...

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Bibliographic Details
Published in:Avian diseases 1982-04, Vol.26 (2), p.314-320
Main Authors: Otsuki, K, Kawaoka, Y, Nakamura, T, Tsubokura, M
Format: Article
Language:English
Subjects:
Animal Population Groups - microbiology
Animals
Animals, Wild - microbiology
Antibodies
Aves
Birds - microbiology
Chick Embryo
Chickens
Chickens - microbiology
Ducks - microbiology
Influenza A virus
Influenza A virus - pathogenicity
Japan
Lungs
Memory interference
Orthomyxoviridae
Rectum
Specific Pathogen-Free Organisms
Terminology as Topic
Viruses
Waterfowl
Whistling
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Summary:We isolated 24 Hav1 Neq1 and 18 Hav6 Nav3 influenza viruses from such free-living wild waterfowl as whistling swans, black-tailed gulls, and tufted ducks in western Japan in 1980. Two Hav1 Neq1 viruses isolated from a whistling swan and a black-tailed gull and a Hav6 Nav3 virus from a whistling swan were examined for their pathogenicity for chickens. Five-week-old specific-pathogen-free chickens were inoculated with the viruses intratracheally or intraperitoneally. Virus was recovered successfully from all the organs, including the brain, despite the absence of signs of disease. The intracerebral pathogenicity index scores obtained for the Hav1 Neq1 viruses were 0.43 and 0.87; the score for the Hav6 Nav3 virus was 0.43. No virus produced plaques in cultivated chick embryo fibroblast cells in the absence of trypsin.
ISSN:0005-2086
1938-4351
DOI:10.2307/1590100