Card Set Information
Many fungal infections are common to man and animals but are not considered zoonotic; the common source of infection is the _________.
Zoonotic mycoses. (3)
microsporum (dermatophytosis), trichophyton (dermatophytosis), sporotrichosis
What is the most common zoonotic disease in the U.S.?
Found mainly in animals but can be transmitted to man.
Found mainly in man and rarely transmitted to animals.
Found mainly in soil and can infect man and animals.
Animals are a reservoir for ____________ [general].
Dermatophytosis is spread by... (4)
direct contact with arthrospores (in hyphae of parasitic stage) or with conidia (in free-living stage), aerosol, fomites
Incubation period of dermatophytes is ___________; clinical signs include... (2)
1-2 weeks; pruritus, skin lesions.
Dermatophytosis has a higher prevalence in _________ [human pop]; most infections are ___________.
the source of dermatophytosis epidemic ringworm in people.
Feline dermatophytosis is caused by _________.
_________ are the most common host and reservoir of dermatophytosis and are a primary source of human infection.
Do cats need to have lesions in order to be the source of human dermatophytosis infection?
Bovine dermatophytosis is caused by _____________.
Dermatophytosis in sheep is often called __________.
club lamb fungus
Dermatophytosis in hogs is caused by ___________; it is a
source of human infection.
Microsporum nanum; rare
Disease of unknown etiology that commonly occurs on the ventral belly of feeder pigs; easily confused with Trichophyton.
Prevention of ringworm infections. (4)
control in animals reduces infections in humans, direct sunlight, disinfection, rodent control
Sporotrichosis is caused by ____________.
Human sporotrichosis infections are associated with __________; incubation is ___________.
skin injuries; 1-3 weeks
Major animal source of human infection with sporotrichosis.
Cats (transmission with contact in absence of skin injury)
Why is sporotrichosis such a debilitating disease? (2)
long term treatment, side effects of iodine treatment
Where are lesions commonly found with feline sporotrichosis? (3)
distal extremities, head, base of tail
Treatment for feline sporotrichosis. (2)
potassium or sodium iodide, ketoconazole [
Dermatophilosis is caused by ___________.
Dermatophilus congolensis is a(n) ___________.
gram + anaerobic bacterium
How is dermatophilosis transmitted to humans?
direct contact with lesions on animals
Humans with dermatophilosis develop an ___________.
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
Clinical signs of dematophilosis (rain scald) in animals. (4)
hair loss, matting, crusting, small tufts of hair fall out/raw underneath
Treatment of dermatophilosis. (3)
head without treatment, keep skin dry, sunlight
Prevention of dermatophilosis in animals. (3)
isolation, don't share grooming equipment, control biting insects
Contagious ecthyma, or commonly ___________, is caused by the _________.
sore mouth; Orf virus
Natural reservoir of Orf virus.
sheep and goats
Orf virus is transmitted by... (2)
direct contact and fomites through skin cuts/abrasions.
Incubation of Orf virus in humans is _________; recovery occurs in _________
3-7 days; 2-6 weeks; without
Incubation of Orf virus in sheep and goats is _________; it is frequently seen in __________; lesions heal in ________.
2-3 days; late spring; 3 weeks
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