Comparison of Multilocus Variable-Number Tandem-Repeat Analysis and Multilocus Sequence Typing for Differentiation of Hemolytic-Uremic Syndrome-Associated Escherichia coli (HUSEC) Collection Strains

Multilocus variable-number tandem-repeat analysis (MLVA) was compared to multilocus sequence typing (MLST) to differentiate hemolytic uremic syndrome-associated enterohemorrhagic Escherichia coli strains. Although MLVA—like MLST—was highly discriminatory (index of diversity, 0.988 versus 0.984), a low level of concordance demonstrated the limited ability of MLVA to reflect long-term evolutionary events.

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