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Picornaviridae
Encephalomyocarditis
| Question | Answer |
|---|---|
| Whoe are the natural hosts of this virus? | Rodents |
| Who is this virus a significant pathogen in? | ONLY in pigs [severe disease in young pigs] |
| Transmission | Eating feed or drinking water contaminated with rodent urine and feces |
| Major site of viral replication | Lymphatic tissues |
| What 3 places can high viremic titers be demonstrated? | Myocardium, Spleen, and mesenteric lymph nodes |
| Disease is subclinical in who? | Weaned pigs and adults |
| What are the clinical signs in very young pigs? | SUDDEN DEATH! anorexia, depression, and difficulty breathing. Mortality approaches 100%. SMEDI |
| What is a good diagnositc tool? | Pathognomonic cardiac lesions [myocardial infarcts, especially in the right ventricle] |
| What is a good control measure with this disease? | RODENT CONTROL. Outbreaks usually run short courses with immunity occurring in suviving animals. |