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Picornaviridae

Porcine Enteroviral Encephalomyelitis

QuestionAnswer
What are 3 other names for this disease? Teschen Disease. Talfan Disease (more common). Polioencephalomyelitis
Who is this virus's host? Swine of all ages but particularly pigs LESS THAN 12 WEEKS
Do all strains of this virus cause a problem? No, several cause inapparent infections
How is this virus transmitted? Ingestion! It can last several months in the environment
What is the pathogenesis of this virus? Ingestion->replicates in GIT and lymphoid tissue->shed into feces for several weeks (NO DESTRUCTION OF git EPITHELIUM)
What is seen in pigs with virulent strains? Viremia, spread to CNS- tremors, incooridnation in hindlimbs, paralysis, prostration, convulsions, coma, and death (Mortality 75%)
What clinical signs are seen in the Taflan form? ataxia associated with hindlimb paresis followed by RECOVERY
The best way to diagnose is... EXPERIENCE! There are many uncharacteristic signs of this disease
What is significant about the pathology of this virus? NO SIGNIFICANT GROSS LESIONS AT NECROPSY
Is vaccination practiced in the US? NO because hygiene and quarantine are good enough
Created by: lkollmeier