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January 1962

Viability of Dermatophytes in Epilated Hairs

Author Affiliations


Department of Dermatology and Syphilology (Dr. Rudolf L. Baer, Chairman), New York University Post-Graduate Medical School, New York, and the Department of Mycology, Prince Leopold Institute of Tropical Medicine, Antwerp (Director of the Institute: Professor Dr. P. G. Janssens).

Arch Dermatol. 1962;85(1):103-105. doi:10.1001/archderm.1962.01590010109013

The longevity of dermatophytes in their parasitic phase in epilated hair has not been the subject of much investigation. Glass1 in 1948 found that hair infected with Microsporum audouini did not grow if they were held in paper envelopes for more than 479 days and that Microsporum canis could not be isolated from epilated hairs held for 348 days or longer. Flores del Fierro et al.,2 on the other hand, recultured M.canis from infected dog's hair after storage for 22 months. Robinson et al.3 failed to culture M. audouini from epilated hairs after 5 years although the hairs were still fluorescent. Trichophyton verrucosum in scales and Trichophyton equinum in hairs remained viable for 4 and 4½ years, respectively, when stored dry in the dark at room temperature.4 We wish to report here our observations on the survival of several species of dermatophytes in epilated hairs.


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