Zoonotic3- Swine Fish Birds

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Mawad
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311779
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Zoonotic3- Swine Fish Birds
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2015-11-20 19:28:15
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  1. Describe hepatitis E virus.
    +ssRNA virus, Hepeviridae, 4 genotypes, swine are primary reservoir
  2. What species do the 4 genotypes of hepatitis E virus infect?
    • 1,2- only humans
    • 3,4- swine, humans
  3. What is the incubation period for hepatitis E virus?
    2 weeks- 2 months
  4. Hepatitis E virus causes a(n) __________ disease that can be... (2)
    acute icteric; asymptomatic (virus cleared rapidly) or symptomatic (anorexia, hepatomegaly, myalgia, jaundice, +/- GI signs)
  5. The severity of hepatitis E virus infection is __________-dependent.
    dose
  6. Describe transmission of hepatitis E virus.
    feco-oral through contaminated food or water
  7. Describe hepatitis E virus infection in swine.
    subclinical infection, infected when maternal antibodies are waning at 8-10 weeks old
  8. Describe strep suis microbes.
    gram + cocci, type 2 in US [many serotypes]
  9. Strep suis is considered a(n) ___________; it is present in many herds without __________.
    emerging zoonotic disease; disease
  10. Strep suis infection is most common in hogs ___________; it usually gains entry from... (4)
    6-10 weeks old; tail docking, naval, ear notching, abrasions.
  11. _________ swine carry strep suis in their... (4)
    Healthy; tonsils, nasal cavities, genital and alimentary tracts.
  12. Why can strep suis be isolate from piglet tonsils a few hours after birth?
    piglets become infected by passing through the vaginal canal at birth
  13. Strep suis is the leading cause of __________ in pigs; ___________ is the most common manifestation of strep suis.
    meningitis; pneumonia
  14. Describe the disease caused by strep suis in people. (5)
    meningitis, cellulitis, endocarditis, arthritis, septicemia
  15. Erysipelas is an infectious multisystemic disease of ___________ that is characterized by... (6)
    swine; diamond skin lesions, sudden death, fever, arthritis, endocarditis, abortion
  16. Erysipelas etiologic agent is __________, which is...
    Erysipelothrix rhusiopathiae; gram + rod
  17. What kind of disease is Erysipelothrix rhusiopathiae cause in humans?
    Erysipeloid- beta-hemolytic streptococcus cutaneous disease
  18. Symptoms of Yersinia enterocolitica in humans. (5)
    fever, abdominal pain, diarrhea (+/- bloody), [rarely] skin rash, joint pain
  19. What people are at highest risk for Yersinia enterocolitica infection?
    children
  20. Describe disease caused by Yersinia enterocolitica in swine.
    [commensal bacteria of swine] usually asymptomatic but may cause outbreaks of diarrhea in young feeder pigs
  21. What are risk factors for humans contracting Yersinia enterocolitica? (3)
    preparation of raw pork intestines, unpasteurized milk, animal contact
  22. 4 most important zoonoses from swine.
    hepatitis E virus, Streptococcus suis, Erysipelas, Yersinia enterocolitica
  23. 2 most important zoonoses from birds.
    Mycobacterium spp, Chlamydophila psittaci
  24. Describe Chlamydophila psittaci microbe. (2)
    obligate intracellular bacterium, lives on surfaces for weeks
  25. The majority of Chlamydophila psittaci human infections is associated with...
    exposure to caged birds.
  26. How is Chlamydophila psittaci transmitted to humans? (4)
    inhalation, mouth-to-beak, direct contact, person-to-person (venereal...not proven)
  27. What is the incubation period of Chlamydophila psittaci in humans?
    1-4 weeks
  28. What are symptoms of Chlamydophila psittaci in humans? (11)
    asymptomatic, pneumonia, fever, chills, headache, malaise, sore throat, cough, dyspnea, splenomegaly, rash
  29. Describe avian chlamydiosis. (4)
    maybe healthy carriers, shedding activated by stress, young birds shed more, latent infection common
  30. Clinical signs of chlamydiosis in pet birds. (6)
    anorexia, weight loss, diarrhea, sinusitis, respiratory distress, nervous signs
  31. What are the most important fish-borne zoonotic agents?
    Mycobacterium spp.
  32. How is Mycobacterium transmitted from fish to people?
    breaks in the skin during contact with contaminated water or infected fish
  33. How is Mycobacterium infection controlled in pet fish populations?
    culling affected fish population and disinfecting tanks and equipment
  34. What is "B virus"? What animal can we contract it from?
    Macacine herpsvirus; monkeys- macaques
  35. What disease does B virus cause in humans?
    acute ascending encephalomyelitis, resulting in death or severe neurologic impairment
  36. Describe B virus in macaques.
    asymptomatic, mild symptoms
  37. How is B virus generally spread to humans from monkeys? (4)
    bites/scratches, exposure to tissues or secretions, mucosal contact with body fluids/tissues, needle stick injury

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