Fungi: Dermatophytes

Question 1

(T/F) Dermatophytosis is mostly host-adapted.

Answer 1

True

Question 2

(T/F) Contact with dermatophytes is enough to cause infection.

Answer 2

False

Question 3

(T/F) Dermatophyte infection is a very slow process due to the slow metabolism of keratin.

Answer 3

True

Question 4

List the 3 genera of dermatophytes.

Answer 4

epidermophyton
microsporum
trichophyton

Question 5

99% of dermatophyte infections in cats and 70% in dogs are caused by this zoonotic species:

Answer 5

microsporum canis

Question 6

Microsporum canis infections in cats are often (subclinical/clinical).

Answer 6

subclinical

Question 7

Which dermatophyte species most commonly infects horses?

Answer 7

trichophyton equinum

Question 8

Which dermatophyte species most commonly infects cattle?

Answer 8

trichophyton verrucosum

Question 9

Which dermatophyte commonly infects swine?

Answer 9

microsporum nanum

Question 10

Diagnosis of dermatophyte infection includes direct exam of hair follicles and __________.

Answer 10

wood’s lamp fluorescence

Question 11

What stain can be used for dermatophyte culture for diagnosis?

Answer 11

cotton blue

Question 12

What dermatophyte vaccine is available in animals which helps to fight infection and accelerate skin healing?

Answer 12

insol vaccine

Question 13

(T/F) Dermatophytes require long-term therapy treatments.

Answer 13

True

Question 14

What two antifungals are used for dermatophyte treatment?

Answer 14

griseofulvin
azoles

Question 15

Which azole has side effects in cats and can cause hepatotoxicity?

Answer 15

ketoconazole

Question 16

Which azole is good for use in cats and has lower toxicity?

Answer 16

itraconazole