Viro Final II

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HLW
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117930
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Viro Final II
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2011-11-19 16:56:43
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Viro Final II
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Viro Final II
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  1. How is EEE, WEE, or VEE infection prevented?
    Inactivated vaccines
  2. Do horses make a full recover from equine encephalitis viruses?
    No, permanent neurological damage
  3. What is the vector of West Nile Virus?
    Mosquito
  4. Which animals are infected by West Nile Virus (3)?
    • Birds
    • Horses
    • Humans
  5. What clinical signs are seen in animals infected with west nile virus (3)?
    • Flu-like symptoms
    • Neurological effects
    • Death
  6. How is West Nile Virus infection diagnosed (7)?
    • Virus isolation
    • PCR
    • Immunohistochemistry
    • Immunofluorescence
    • Complement fixation test
    • ELISA
    • Plaque Neutralization test
  7. How is West Nile virus infection prevented (3)?
    • Control mosquitoes
    • Recombinant (canarypox virus vectored) vaccine
    • West Nile-Innovator DNA vaccine
  8. What animals are affected by Japanese encephalitis (mosquito borne disease) (4)?
    • Horses
    • Humans
    • Abortions in pigs
    • Birds
  9. How is Japanese encephalitis diagnosed (4)?
    • Virus isolation (unweaned mice)
    • Cell culture of chicken embryo and vero cells
    • PCR
    • Serology (Virus neutralization, hemagglutination inhibition, complement fixation, IgM and IgG in CSF)
  10. How is Japanese encephalitis infection prevented (2)?
    • Control mosquitoes
    • Inactivated and attenuated vaccines
  11. What are the four coronavirus disease patterns in swine (4)?
    • Transmissible gastroenteritis
    • Respiratory disease
    • Porcine epidemic diarrhea
    • Vomiting and wasting disease
  12. How is transmissable gastroenteritis transmitted in pigs (2)?
    • Contact exposure
    • Aerosol
  13. What are the clinical signs of transmissible gastroenteritis infection in suckling piglets (4)?
    • Vomiting
    • Profuse watery diarrhea
    • Dehydration
    • Excessive thirst
    • (almost 100% mortality)
  14. What are the clinical signs of transmissible gastroenteritis infeciton in weaners and grower pigs (3)?
    • Vomiting
    • Watery diarrhea
    • Dehydration
    • (Mortality is low)
  15. How is transmissible gastroenteritis infection diagnosed (5)?
    • Clinical signs
    • Immunofluoresence or immunoperoxidase
    • Virus isolation from thyroid or testicle cells
    • ELISA
    • Virus neutralization
  16. How is transmissible gastroenteritis controlled (2)?
    • Vaccination of naturally immune sows
    • Planned infection of pregnant sows 2-4 weeks before farrowing
  17. Is there a vaccine available for Porcine Respiratory Corona virus?
    No
  18. How is porcine respiratory corona virus infection diagnosed (2)?
    • Virus isolation from primary cell culture
    • Demonstration of antibodies
  19. What virus causes vomiting and wasting disease in swine?
    Porcine hemagglutinating encephalomyelitis virus
  20. What are the clinical signs of porcine hemagglutinating encephalomyelitis virus infection in piglets under 2 weeks of age (5)?
    • Anorexia
    • Muscle tremors
    • Vomiting
    • Emaciation
    • Death
  21. What causes vomiting in a procine hemagglutinating encephalomyelitis virus infection?
    Virus replication in the ganglion distale vagi
  22. What causes wasting in a procine hemagglutinating encephalomyelitis virus infection?
    Neurological disturbances of vomition center
  23. How is a porcine hemagglutination encephalomyelitis virus infection diagnosed (2)?
    • Virus isolation in primary swine cell culture
    • Hemagglutination test
  24. How is porcine hemagglutination encephalomyelitis virus infection prevented (2)?
    • Good husbandry
    • No vaccine
  25. What virus causes Winter dysentery in cattle?
    Bovine corona virus
  26. How is winter dysentery transmitted?
    Fecal-oral route
  27. What are the clinical signs of winter dysentery (5)?
    • Diarrhea +/-Blood
    • Marked drop in milk production
    • Anorexia
    • Depression
    • Coughing
  28. How is winter dysentery diagnosed (2)?
    • Fecal samples by EM
    • Test serum samples taken 8 weeks apart
  29. How is winter dysentery prevented in cattle (3)?
    • Isolation of newly introduced cattle for 2 weeks
    • Biosecurity
    • No vaccine
  30. Combined infection of canine coronavirus and what other virus causes a serious disease in dogs?
    Canine parvovirus
  31. How is canine coronavirus transmitted?
    Fecal-oral transmission
  32. What are the clinical signs of canine coronavirus infection (3)?
    • Anorexia
    • Vomiting
    • Diarrhea
  33. How is a canine coronavirus infection diagnosed?
    Viral particles in feces by electron microscopy
  34. How is canine coronavirus infection prevented?
    Vaccine given to puppies and dogs at high risk of exposure
  35. What is the cause of feline infectious peritonitis?
    Feline enteric coronavirus (FCoV)
  36. How is FCoV transmitted?
    Fecal-oral transmission
  37. What percent of FCoV affected cats develop Feline infectious peritonitis?
    5%
  38. What disease is the result of an immune-mediated reaction initiated by virus within macrophages, antiviral antibodies, and complement?
    Feline infectious peritonitis
  39. What are the three forms of feline infectious peritonitis?
    • Effusive, exudative wet form
    • Non-effusive, non-exudative, dry granulomatous form
    • Mixed form
  40. What are the clinical signs of feline infectious peritonitis (8)?
    • Fever
    • Anorexia
    • +/- Icteric
    • Enlarged mesenteric lymph nodes
    • Irregular kidneys
    • Nodular irregularities in the viscera
    • Ocular lesions
    • Neurological signs
  41. How is FIP diagnosed (4)?
    • Hematology
    • Rivalta test
    • Antibody measurement
    • Reverse transcriptase PCR
  42. How is FIP infection prevented (2)?
    • Temperature sensitive mutant vaccine
    • Intranasal injection
  43. What organ systems does infectious bronchitis affect in chickens (2)?
    • Respiratory
    • Urogenital tract
  44. What are the clinical signs of infectious bronchitis virus infection in 1-4 week old chickens (5)?
    • Gasping
    • Tracheal rales
    • Coughing
    • Nasal discharge
    • Hypoplasia of oviduct
  45. What organs does infectious bronchitis virus cause the most damage to (3)?
    • Ovaries
    • Oviducts
    • Kidneys
  46. How is infectious bronchitis virus diagnosed (5)?
    • Virus isolation in chicken embryos
    • Direct immunofluorescence
    • Electron microscopy
    • Nucleic acid analysis
    • RT-PCR
  47. How is infectious bronchitis virus infection prevented?
    Attenuated live vaccines
  48. How is turkey coronavirus transmitted?
    Fecal-oral
  49. What are the clinical signs of a turkey coronavirus infection (4)?
    • Loss of appetite
    • Watery diarrhea
    • Dehydration
    • Atrophy of cloacal bursa
  50. How is turkey coronavirus infection diagnosed (6)?
    • Virus isolation in chicken embryo
    • Immunofluorescence
    • Immunoperoxidase for antigen
    • Electron Microscopy
    • RT-PCR
    • Serology
  51. How can turkey coronavirus infection be prevented/eliminated (3)?
    • No vaccine
    • Must depopulate and clean
    • Keep free of birds for 3-4 weeks

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