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IP6 Virology E2 FAD

Foreign Animal Dz and IMP Reportable DZ

QuestionAnswer
a transmissible livestock,poultry or equne dz that is usually absent from the USA & has potential for sig impact on animal health Foreign animal disease (FAD)
what organization identifies agents that are considered to be most important animal pathogens globably (most of which are viruses)? Office International des Epizooties (OIE), the animal world heath organization
______ maintains a list of High Consequence Livestock Pathogens which are reportable and considred to be high economic concern (most are viruses) USDA
What are 4 Ways the US agriculture is vulnerable to FAD? 1.Extensive movements of animals 2. Animals raised in very large groups 3. High number of animals can predispoze to dz 4. Products intermingle at many levels (farm->fork) 5. Difficulty with security on farms and stores
What are 4 Potential routes of FAD introduction? 1. Agroterrorism 2. Accidental (tourism and imported animals) 3. Migration of wildlife 4. Natural occurrence of dz
Who should you contact if you suspect/diagnose an FAD? 1. Office of the State Veterinarian (can quarantine animals) 2. Foreign Animal Dz Diagnostician (FADD)-they collect the samples and make diagnosis
What type of virus causes FMD? Picornavirus (7 serotypes)
What are the maintenance hosts of FMD? sheep-they show few clinical signs but can spread virus to other animals
What are the amplifiers of FMD Pigs-they become ill and shed tons of virus in their respiratory secretions; contaminate the environment
What are the indicator spp of FMD? Cattle, lesions develop early and symptoms are severe
How is the FMDV transmitted? saliva, feces, urine, milk and respiratory aerosols; vesicles also have high titers (inhalation, ingetion, direct contact, fomites and airborne are all methods of transmission)
How long can the FMDV survive in feces, hay, bran and snow covered soil more than 100 days!
T/F recovered or vaccinated animals can become carriers with FMDV remaining in pharyngeal areas? True!
which spp can become carriers of FMD Cattle-for 2 years, Sheep for 9mo, Pigs do not become carriers
T/F FMD can survive pasteurization temperatures and be transmitted in milk and also survives indefinitly in refrigerated meat byproducts True
T/F FMD can survive in frozen BM or LN True
Pathogenesis of FMD: inhale/ingest virus->replication in pharyngeal epi->spread to LN->replication and dissemination to epithelial sites->vesicle formation on mouth, snout, feet and teets
Virus can be excreted for ___ hours prior to development of clinical symptoms 24 hours (can spread before the dz is recognized)
Created by: rccola19