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Picornaviridae

Avian Encephalomyelitis

QuestionAnswer
What is another name for this disease? Epidemic Tremor
Who is this disease mostly seen in? Mild encephalomyelitis is seen in... Chickens between 1-3 weeks of age. Turkey poults, quail, and pheasants
Is there disease in adult hens? NO, just a transient drop in egg production
How is this virus transmitted? Fecal-oral route. Eggs during a short viremic phase of approimately 1 week. Lateral spread from chick to hatchmates either in the HATCHERY or during BROODING
After the virus replicates in the GIT and there is a subsequent viremia, what clinical signs are seen? Reduction in hatchability of fertile eggs, unsteadiness, sitting on hocks, tremors, prostation, blindness, paralysis, coma, and death
Rocovered birds may show what? CNS deficiencies and may have to be killed
The mortality rate may exceed ? in an intial outbreak. 50%
What is significant of the pathology of this disease? NO GROSS LESIONS AT NECROPSY
What are two control methods? Depopulation or vaccination
Created by: lkollmeier