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OJVRTM
Online Journal of
Veterinary Research©
(Including Medical and Laboratory Research)
Established 1994
ISSN 1328-925X
Volume 29 (3): 152-159, 2025.
Case study: clinical pathology of cormorants with avian
paramyxovirus-1
K
Singh1, Jennifer Nevis2, P. Roady1, S. Corner1,
K. Szilagyi1
1Veterinary
Diagnostic Laboratory, University of Illinois, Urbana-Champaign, 2Willowbrook
Wildlife Center, Glen Ellyn, IL, USA.
ABSTRACT
Singh K, Nevis J, Roady P, Corner S, K.
Szilagyi, Case study:
clinical pathology of cormorants with avian paramyxovirus-1, Onl J Vet Res, 29 (3): 152-159, 2025. Six young cormorants (Phalacrocorax sp.) presented with difficult swallowing, head shaking, visual
deficits, bilateral limb, wing paralysis and inability to rise. Gross necropsy of one
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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