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Journal of Clinical Microbiology, March 2000, p. 1302-1304, Vol. 38, No. 3
Department of
Pathology1 and Department of
Microbiology and Immunology,3 Baylor College of
Medicine, and Pathology and Laboratory Medicine Service,
Veterans Affairs Medical Center,2 Houston, Texas
Received 23 June 1999/Returned for modification 21 August
1999/Accepted 13 November 1999
Here we describe four isolations of Erysipelothrix
rhusiopathiae associated with polyarthralgia and renal failure,
septic arthritis, classic erysipeloid, and peritonitis. Although the biochemical identification was straightforward in each case,
recognition presented a challenge to the clinical microbiologist, since
in three cases E. rhusiopathiae was not
initially considered due to unusual clinical presentations, in two
cases the significance might not have been appreciated because growth
was in broth only, and in one case the infection was thought to be
polymicrobic. Because the Gram stain can be confusing, abbreviated
identification schemes that do not include testing for H2S
production could allow E. rhusiopathiae isolates to be
misidentified as Lactobacillus spp. or
Enterococcus spp. in atypical infections.
0095-1137/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
Potential Errors in Recognition of
Erysipelothrix rhusiopathiae
and
*
Corresponding author. Mailing address: Pathology and
Laboratory Medicine Service (113), Veterans Affairs Medical Center,
2002 Holcombe Blvd., Houston, TX 77030. Phone: (713) 794-7336. Fax: (713) 794-7657. E-mail: jillc{at}bcm.tmc.edu.
Present address: Luminex, Austin, TX
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