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Canary pox causing high mortality in an aviary.

B J Johnson, A E Castro

    Journal of the American Veterinary Medical Association
    |November 15, 1986
    PubMed
    Summary
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    A severe avian disease caused high mortality in canaries, characterized by respiratory distress and skin lesions. Poxvirus was identified as the causative agent through isolation and electron microscopy.

    Area of Science:

    • Veterinary Pathology
    • Avian Virology
    • Disease Outbreaks

    Background:

    • Canaries experienced a significant disease outbreak over six weeks.
    • The disease presented with lethargy, ruffled feathers, and respiratory distress, leading to rapid mortality.

    Purpose of the Study:

    • To identify the causative agent of a fatal disease in a canary flock.
    • To characterize the clinical and pathological features of the outbreak.

    Main Methods:

    • Clinical observation and necropsy of affected birds.
    • Histopathological examination of lung, skin, and airway tissues.
    • Virus isolation and identification using electron microscopy.

    Main Results:

    • High morbidity (82.5%) and mortality (72.5%) observed in the canary population.

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  • Early necropsy revealed cloudy air sacs and pneumonia; later cases showed proliferative skin lesions.
  • Histology confirmed proliferative necrotizing bronchitis and poxvirus-like intracytoplasmic inclusions.
  • Poxvirus was successfully isolated and identified from affected birds.

    • Conclusions:

    • The study identified poxvirus as the cause of a severe, fatal disease in canaries.
    • The disease progression involved respiratory and dermatological manifestations.
    • Poxvirus infection poses a significant threat to canary populations.