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Picornaviridae
Porcine Enteroviral Encephalomyelitis
Question | Answer |
---|---|
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 |