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Journal of Clinical Microbiology, November 1998, p. 3389-3391, Vol. 36, No. 11
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

First Isolation of Trichophyton fischeri in the United States

S. A. Rosenthal,1 J. S. Scott,2 R. C. Summerbell,3,4 and J. Kane4,5,*

Department of Botany2 and Department of Laboratory Medicine and Pathobiology,4 University of Toronto, Ontario Ministry of Health,3 and Sunnybrook-Dynacare Medical Laboratories,5 Toronto, Ontario, Canada, and New York University Medical Center, New York, New York1

Received 2 April 1998/Returned for modification 22 April 1998/Accepted 27 July 1998

A 49-year-old male with Pneumocystis carinii pneumonia was seen at Bellevue Hospital in New York, N.Y. Sputum samples yielded cultures of Candida lusitaniae, Mycobacterium avium, and a filamentous fungus, Trichophyton fischeri. T. fischeri is a nonpathogenic fungus which resembles the dermatophyte Trichophyton rubrum. This is the first record of the species from U.S. sources. This case exemplifies the ecological differences between T. fischeri and T. rubrum and illustrates how correct identification of the former species can minimize diagnostic confusion. The two species are distinguished from each other by the type of growth on Casamino Acids-erythritol-albumin agar and by micromorphological differences.

* Corresponding author. Mailing address: Department of Microbiology, B-121, Mycology Laboratory, Sunnybrook Dynacare Laboratory Services, 2075 Bayview Ave., Toronto, Ontario M4N 3M5, Canada. Phone: (416) 480-4242. Fax: (416) 480-6845.

Journal of Clinical Microbiology, November 1998, p. 3389-3391, Vol. 36, No. 11
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.


This article has been cited by other articles:

  • Gräser, Y., Kuijpers, A. F. A., Presber, W., de Hoog, G. S. (2000). Molecular Taxonomy of the Trichophyton rubrum Complex. J. Clin. Microbiol. 38: 3329-3336 [Abstract] [Full Text]  
  • Summerbell, R. C., Haugland, R. A., Li, A., Gupta, A. K. (1999). rRNA Gene Internal Transcribed Spacer 1 and 2 Sequences of Asexual, Anthropophilic Dermatophytes Related to Trichophyton rubrum. J. Clin. Microbiol. 37: 4005-4011 [Abstract] [Full Text]  


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