A Clinical and Mycologic Study of Tinea Corporis and Pedis in Puerto Rico

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Abstract
A study of the causative agents of tinea corporis and pedis in Puerto Rico in 1982 disclosed four different dermatophytes from a total of 97 cases. Among the total of 49 fungus specimens collected in tinea corporis, the mycologic flora consisted of four different fungus species: Trichophyton rubrum, 42 isolates (85.7%); Epidermophyton floccosum, 4 (8.1%); Trichophyton mentagrophytes, 2 (4%); and Microsporum ferrugineum, 1 (2%). Among the total of 48 fungus specimens collected in tinea pedis, the mycologic flora consisted of 3 different fungus species as follows: T. rubrum, 35 isolates (72.9%); T. mentagrophytes 8 (16.6%); and E. floccosum, 5 (10.4%). Trichophyton rubrum caused 77 of 97 fungal isolates (79.3%). One surprising finding was the isolation of M. ferrugineum in a case of tinea corporis, documenting the first autochtonous case of this species in the island. This dermatophyte had previously been known only in Japan and adjacent areas of the Far East, Southern Europe, and Africa.

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