Abstract
We evaluated 5 methods for the detection of verotoxogenic Escherichia coli (VTEC) from faecal specimens to determine the most sensitive and specific method(s) and to advise an optimum testing strategy. A total of 681 stool specimens were examined using up to 5 diagnostic molecular and phenotypic methods that are used routinely in the VTEC Reference laboratory, Dublin. A testing strategy incorporating a 2-step approach that included a single Real Time-PCR and 1 culture-based method yielded the highest sensitivity, specificity, positive predictive value, and negative predictive value of 98.21%, 100%, 100%, and 99.43%, respectively.
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