A 6-year-old presented to the clinic with scaly patches on the scalp. Primary smears and culture of the skin and hair were negative. A few weeks later. She returned and was found to have inflammatory lesions. The hair fluoresced under Wood’s light and primary smears of skin and hair contained septate hyphac. On speaking with the parent, it was discovered that there were several pets in the household. Which of the following is the most likely agent? (AIPG 2009)
a. Hairs infected with both M. canis and M. audouini fluoresce with a yellow-green color under Wood's light, while T rub rum, T tonsurans, and E. floccosum do not.
b. But M. audouini is an anthropophilic agent of tinea capitis, whereas M. canis is zoophilic. M. canis is seen primarily in children and is associated with infected cats or dogs.
c. On the basis of natural habitat they are classified into three groups:
d. Geophilic: found in soil
e. Zoophilic: found in domestic or wild animals
f. Anthropophilic: found exclusively in humans
g. Extra Edge
h. Trichophyton = 24 Species
i. Microsporum = 16 Species
j. Epidermophyton =2 Species