A modified automated high-throughput mycobacterial interspersed repetitive unit method for genotyping Mycobacterium tuberculosis.

A total of 502 isolates of Mycobacterium tuberculosis collected in Taiwan were genotyped using a modified and high-throughput typing system involving mycobacterial interspersed repetitive units. The Hunter-Gaston discriminatory index improved significantly to 0.972 with the modified 15-locus scheme, including ETR-A, ETR-B, and ETR-C, compared with 0.951 for the previously reported 12-locus design.

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