Zoonotic3- Fungi

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  1. Many fungal infections are common to man and animals but are not considered zoonotic; the common source of infection is the _________.
  2. Zoonotic mycoses. (3)
    microsporum (dermatophytosis), trichophyton (dermatophytosis), sporotrichosis
  3. What is the most common zoonotic disease in the U.S.?
    dermatophytosis (ringworm)
  4. Found mainly in animals but can be transmitted to man.
  5. Found mainly in man and rarely transmitted to animals.
  6. Found mainly in soil and can infect man and animals.
  7. Animals are a reservoir for ____________ [general].
    zoophilic dermatophytes
  8. Dermatophytosis is spread by... (4)
    direct contact with arthrospores (in hyphae of parasitic stage) or with conidia (in free-living stage), aerosol, fomites
  9. Incubation period of dermatophytes is ___________; clinical signs include... (2)
    1-2 weeks; pruritus, skin lesions.
  10. Dermatophytosis has a higher prevalence in _________ [human pop]; most infections are ___________.
    children; self-limiting
  11. Animals are/are not the source of dermatophytosis epidemic ringworm in people.
    are not
  12. Feline dermatophytosis is caused by _________.
    Microsporum canis
  13. _________ are the most common host and reservoir of dermatophytosis and are a primary source of human infection.
  14. Do cats need to have lesions in order to be the source of human dermatophytosis infection?
  15. Bovine dermatophytosis is caused by _____________.
    Trichophyton verrucosum
  16. Dermatophytosis in sheep is often called __________.
    club lamb fungus
  17. Dermatophytosis in hogs is caused by ___________; it is a common/rare source of human infection.
    Microsporum nanum; rare
  18. Disease of unknown etiology that commonly occurs on the ventral belly of feeder pigs; easily confused with Trichophyton.
    pityriasis rosea
  19. Prevention of ringworm infections. (4)
    control in animals reduces infections in humans, direct sunlight, disinfection, rodent control
  20. Sporotrichosis is caused by ____________.
    Sporothrix schenckii
  21. Human sporotrichosis infections are associated with __________; incubation is ___________.
    skin injuries; 1-3 weeks
  22. Major animal source of human infection with sporotrichosis.
    Cats (transmission with contact in absence of skin injury)
  23. Why is sporotrichosis such a debilitating disease? (2)
    long term treatment, side effects of iodine treatment
  24. Where are lesions commonly found with feline sporotrichosis? (3)
    distal extremities, head, base of tail
  25. Treatment for feline sporotrichosis. (2)
    potassium or sodium iodide, ketoconazole [guarded prognosis]
  26. Dermatophilosis is caused by ___________.
    Dermatophilus congolensis
  27. Dermatophilus congolensis is a(n) ___________.
    gram + anaerobic bacterium
  28. How is dermatophilosis transmitted to humans?
    direct contact with lesions on animals
  29. Humans with dermatophilosis develop an ___________.
    exudative dermatits
  30. Transmission of dermatophilosis between animals is by... (4)
    release of zoospores from lesions when they get wet- direct contact, contaminated equipment, insects as mechanical vectors
  31. Clinical signs of dematophilosis (rain scald) in animals. (4)
    hair loss, matting, crusting, small tufts of hair fall out/raw underneath
  32. Treatment of dermatophilosis. (3)
    head without treatment, keep skin dry, sunlight
  33. Prevention of dermatophilosis in animals. (3)
    isolation, don't share grooming equipment, control biting insects
  34. Contagious ecthyma, or commonly ___________, is caused by the _________.
    sore mouth; Orf virus
  35. Natural reservoir of Orf virus.
    sheep and goats
  36. Orf virus is transmitted by... (2)
    direct contact and fomites through skin cuts/abrasions.
  37. Incubation of Orf virus in humans is _________; recovery occurs in _________ with/without treatment.
    3-7 days; 2-6 weeks; without
  38. Incubation of Orf virus in sheep and goats is _________; it is frequently seen in __________; lesions heal in ________.
    2-3 days; late spring; 3 weeks
  39. Control of Orf virus includes...
    vaccinate lambs and kids- control WHEN they get infected- will get clinical disease with vaccination- isolate vaccinated animals until lesions heal
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Zoonotic3- Fungi
vetmed zoonotic3
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