The rapid and accurate identification of Escherichia coli O157:H7 strains is central to reducing the impact of outbreaks. A real-time PCR-based approach to differentiating major outbreak lineages of O157 with novel single-nucleotide polymorphisms is described. The utility of this method is in detection of hypervirulent strains in cases of clinical disease.
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Riordan et al. (2008) studied this question.
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