Exotic Newcastle disease in a game chicken flock

A sudden increase in mortality, preceded by a short history of respiratory signs and diarrhea, occurred in a backyard flock of 48 game chickens in the Central Valley of California. Necropsy findings included severe generalized linear hemorrhages and/or ulcers in the digestive tract, larynx, and trac...

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Bibliographic Details
Published in:Avian diseases 1999-04, Vol.43 (2), p.349-355
Main Authors: Crespo, R, Shivaprasad, H.L, Woolcock, P.R, Chin, R.P, Davidson-York, D, Tarbell, R
Format: Article
Language:English
Subjects:
Animals
Birds
California - epidemiology
Case Reports
case studies
Chickens
clinical aspects
Communicable Disease Control - economics
Disease outbreaks
Disease Outbreaks - veterinary
Disease Transmission, Infectious
Flocks
Infectious diseases
Newcastle disease
Newcastle Disease - epidemiology
Newcastle Disease - pathology
Newcastle Disease - transmission
Newcastle disease virus
Newcastle disease virus - isolation & purification
outbreaks
Poultry Diseases - epidemiology
Poultry Diseases - pathology
Poultry Diseases - transmission
spread
Trachea
Viruses
Wild birds
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Summary:A sudden increase in mortality, preceded by a short history of respiratory signs and diarrhea, occurred in a backyard flock of 48 game chickens in the Central Valley of California. Necropsy findings included severe generalized linear hemorrhages and/or ulcers in the digestive tract, larynx, and trachea. Histology revealed severe multifocal hemorrhages and necrosis in the mucosa of the respiratory and digestive tracts, vasculitis, and necrosis of lymphoid tissue. The birds were serologically negative to Newcastle disease virus; this was consistent with an acute infection. The avian paramyxovirus type 1 isolated was characterized as velogenic viscerotropic Newcastle disease virus. A thorough epidemiologic investigation was carried out, and no other premises were found to have birds with clinical signs or evidence of exposure. The entire outbreak was limited to the original backyard flock and resolved within 14 days of the onset of clinical signs.
ISSN:0005-2086
1938-4351
DOI:10.2307/1592629