Evaluation of BBL CHROMagar O157 versus sorbitol-MacConkey medium for routine detection of Escherichia coli O157 in a centralized regional clinical microbiology laboratory |
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| Authors: | Church D L Emshey D Semeniuk H Lloyd T Pitout J D |
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| Affiliation: | Calgary Laboratory Services (CLS), Calgary, Alberta T2N 4B8, Canada. Deirdre.church@cls.ab.ca |
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| Abstract: | ![]()
The performance of BBL CHROMagar O157 (CHROM) versus that of sorbitol-MacConkey (SMAC) media for detection of Escherichia coli O157 was determined for a 3-month period. Results for 27/3,116 (0.9%) stool cultures were positive. CHROM had a higher sensitivity (96.30%) and negative predictive value (100%) and a better diagnostic efficiency than SMAC. Labor and material costs decreased when CHROM was used. |
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