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Pathologic findings in waterfowl naturally infected with duck virus enteritis in Spain

AuthorsGamino, Virginia ; Oleaga, Álvaro ; Fernández de Mera, Isabel G.; Gutiérrez-Guzmán, Ana Valeria; Höfle, Ursula
Issue Date2012
Citation61st WDA/10th EWDA (2012)
AbstractDuck virus enteritis (DVE) is an acute contagious herpesvirus infection that occurs naturally in birds of the family Anatidae. An outbreak of DVE affected an urban park duck population in the north of Spain including also wintering waterfowl and gulls. Detailed necropsy was carried out on five birds (four Anatidae, one Laridae). Macroscopic lesions included multiorganic congestion and vessel injection, petechiae in the mucosa of the proventriculus, ventriculus and large intestine, and small white scattered foci in the liver and the kidney. Microscopically, congestion and haemorrhages were generalized. Necrosis was seen in the spleen, liver, kidney, and intestine. In the intestine diffuse mononuclear infiltrates in the lamina propria and the muscular layer were characteristic. The brain showed marked gliosis, satellitosis, neuronophagocytosis, and neuronal necrosis. Acidophilic intranuclear inclusions were detected in hepatocytes, cardiomyocytes, renal tubular epithelial cells, intestinal crypt epithelial cells, pancreatic acinar cells, and inflammatory cells of different tissues. Sequence analysis of a DNA fragment obtained by consensus herpesvirus PCR showed 97% homology with published DVE sequences. Despite being a well known disease in waterfowl this is the first time that the disease is described in a member of the family Laridae and the second time that it is described in Spain. DVE should be a differential diagnosis for waterfowl mortality in Spanish wetlands.
DescriptionResumen del trabajo presentado a la 61st Wildlife Disease Association and 10th Biennial European Wildlife Disease Association: "convergence in wildlife health", celebrada en Lyon (Francia) del 23 al 27 de julio de 2012.
Appears in Collections:(IREC) Comunicaciones congresos
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