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OJVRTM
Online Journal of Veterinary Research©
Volume 15 (1): 61-67, 2011. Redacted
slightly 2017.
Clinical and pathological findings in cormorants with avian paramyxovirus-1
K
Singh1, Jennifer Nevis2, P. Roady1, S. Corner1,
K. Szilagyi1
1Veterinary Diagnostic Laboratory,
University of Illinois, Urbana-Champaign, IL-61802,2Willowbrook
Wildlife Center, Glen Ellyn, IL-60137
ABSTRACT
Singh K, Nevis J, Roady P, Corner S, K.
Szilagyi, Clinical
and pathological findings in cormorants with avian paramyxovirus-1, Onl J Vet Res, 15 (1): 61-67, 2011. Six wild caught young cormorants (Phalacrocorax sp.) were presented with neurologic signs, including difficulty in
swallowing, random head shaking, visual deficits, progressive bilateral limb
and wing paralysis, and inability to rise.
Gross necropsy of one cormorant revealed poor nutritional status with prominent
keel bone, severe atrophy of pectoral muscles and depletion of adipose tissue
stores. Cerebellar edema, splenomegaly, and nematodes in the ventriculus were also observed grossly. Histologically,
necrotizing mesobronchitis and parabronchitis
with epithelial regeneration, chronic lymphoplasmacytic
and histiocytic meningoencephalitis, mild chronic lymphoplasmacytic
interstitial nephritis, lymphoplasmacytic and
granulomatous proventriculitis, and chronic enteric
hemorrhages were observed. An incidental finding included the presence of
nematodes within the areas of granulomatous proventriculitis.
Newcastle disease virus (Avian paramyxovirus type I) was identified in the brain
samples using RT-PCR. General public, hunters, and other professionals should
avoid contact with the birds suffering from Newcastle disease because of
zoonotic implication. The clinical signs
in humans include fever, ocular discharge, and respiratory symptoms.
Keywords:
Avian paramyxovirus; bronchitis; cormorants; ducks; meningoencephalitis;
neurologic disease; Newcastle disease
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