Bovine ringworm. An outbreak caused by Trichophyton mentagrophytes var. granulare in Greece.

Seven cattle barns were investigated during the years 1976 through 1977. Six of these barns located in central Euboea have been characterized as "suspect" barns because one or more persons working in these barns had been infected by dermatomycosis. The seventh barn serving as control was located on the opposite side of the Boeotic coast. A total of 60 "suspected as infected" animals were isolated from all these barns. Twenty-one of them (35%) gave positive cultures for dermatophytes in Sabouraud medium. Of the 113 "healthy" animals that were examined, 28 (24.8%) gave positive cultures. The only pathogenic strain of dermatophyte that was isolated was the Trichophyton mentagrophytes var. granulare.