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. 2011 Jan;77(1):343-5.
doi: 10.1128/AEM.01872-10. Epub 2010 Nov 5.

Virulence characterization of Shiga-toxigenic Escherichia coli isolates from wholesale produce

Peter C H Feng  1 , Terry Councell, Christine Keys, Steven R Monday
Affiliations

Virulence characterization of Shiga-toxigenic Escherichia coli isolates from wholesale produce

Peter C H Feng et al. Appl Environ Microbiol. 2011 Jan.

Abstract

The 13 Shiga-toxigenic Escherichia coli (STEC) strains isolated from wholesale spinach and lettuce consisted mostly of serotypes that have not been implicated in illness. Among these strains, however, were two O113:H21 that carried virulence genes common to this pathogenic serotype (stx(2), ehxA, saa, and subAB), suggesting that their presence in ready-to-eat produce may be of health concern.

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Figures

FIG. 1.
FIG. 1.
PFGE profiles of XbaI-digested genomic DNA of O113:H21 strains and a dendrogram comparing profile similarities. The strain designations are shown at the right of the profiles. The cluster tree was constructed using the BioNumerics (Applied Maths, Sint-Martens-Latem, Belgium) software package.
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