Epidemiology and ecology of sporotrichosis in Japan.

Some characteristics in epidemiology and ecology of sporotrichosis in Japan are summarized as follows: 1) In some areas of Japan, sporotrichosis shows relatively high incidence. 2) Frequent onset of the infection in the cold season. 3) Preponderance of the infection in females. 4) Preponderance of the infection in children and aged persons. 5) Predilection of lesions on the face of children as well as on the upper extremity in the case of adolescent and adult patients. 6) Familial occurrence. 7) High frequency of demonstration of the parasite in tissue.