Unusual pathology of canary poxvirus infection associated with high mortality in young and adult breeder canaries (Serinus canaria)

Avian Pathology : Journal of the W.V.P.A
H L ShivaprasadF Uzal

Abstract

Mortality in excess of 65% occurred in a flock of 450 canaries (Serinus canaria). Clinical signs in the canaries included severe respiratory distress, loss of feathers and/or scaly skin on the head, neck and back, anorexia, loss of weight and fluffed-up appearance of several days duration before death. Gross pathology in most of the canaries included thickened eye lids and small scab-like nodules on the skin of the head and neck, enlarged thymus, mild to severe consolidation of lungs and exudate in the sinuses and trachea. A few birds also had thickened air sacs and enlarged and pale spleens. Microscopically unusual lesions included severe epithelial proliferation and hypertrophy and mononuclear inflammatory cells containing eosinophilic intracytoplasmic inclusion bodies of poxvirus in the thymus, bursa of Fabricius, spleen, bone marrow, air sac, peritoneum, external and middle ears, and lachrymal gland. Similar inclusion bodies associated with inflammation were also seen in the epidermis, dermis, feather follicles, conjunctivae, sinuses, turbinates, choana, oral mucosa including tongue, oesophagus, larynx, trachea, syrinx and bronchi and parabronchi of lungs. Some of the birds also had concurrent bacterial, mycotic and polyoma...Continue Reading

References

Apr 1, 1988·Virus Research·W M SchnitzleinD N Tripathy
Oct 16, 2003·Veterinary Microbiology·Tae-Joong KimDeoki N Tripathy
Aug 19, 2005·Journal of Wildlife Diseases·Teresa ThielPatricia G Parker
Oct 1, 1999·Avian Pathology : Journal of the W.V.P.A·A L BolteE F Kaleta

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Citations

Feb 5, 2011·Virology Journal·Simon C Weli, Morten Tryland
Jan 1, 2013·Journal of Zoo and Wildlife Medicine : Official Publication of the American Association of Zoo Veterinarians·Carter T AtkinsonSusan I Jarvi
Aug 28, 2010·The Journal of General Virology·Mohammad Yahya HalamiReimar Johne
Aug 27, 2013·Acta Veterinaria Hungarica·Teresa Agnieszka KarpińskaMichał Reichert
May 28, 2019·Archives of Virology·Fatemeh ZarifiJamshid Razmyar
Feb 16, 2018·Veterinary Research Communications·Daniel A TruchadoLaura Benítez
May 16, 2019·Growth Factors·Zabeen Lateef, Lyn M Wise

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Methods Mentioned

BETA
electron microscopy
PCR
electrophoresis
restriction

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