Abstract
A total of 66 (98.5%) of 67 enterohemorrhagic Escherichia coli (EHEC) O157:H7 strains had increased potassium tellurite (Te) MICs (32 to 1,024 microg/ml), grew on Te-containing media, and possessed Te resistance (ter) genes, whereas 83 (96.5%) of 86 sorbitol-fermenting (SF) EHEC O157:NM strains had Te MICs of </=4 microg/ml, did not grow on Te-containing media, and lacked ter genes. Optimal detection of SF EHEC O157:NM strains requires Te-independent strategies.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Culture Media
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Drug Resistance, Bacterial / genetics*
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Escherichia coli Infections / microbiology*
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Escherichia coli O157 / classification
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Escherichia coli O157 / drug effects*
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Escherichia coli O157 / genetics
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Escherichia coli O157 / metabolism
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Escherichia coli Proteins / genetics
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Humans
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Microbial Sensitivity Tests / methods
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Phenotype
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Sorbitol / metabolism*
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Tellurium / pharmacology*
Substances
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Culture Media
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Escherichia coli Proteins
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Sorbitol
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potassium tellurate(IV)
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Tellurium