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abstractpubmed· Abstract 2016· item PMID:26982330

Hypervirulent emm59 Clone in Invasive Group A Streptococcus Outbreak, Southwestern United States. The hyper-virulent emm59 genotype of invasive group A Streptococcus was identified in northern Arizona in 2015. Eighteen isolates belonging to a genomic cluster grouped most closely with recently identified isolates in New Mexico. The continued transmission of emm59 in the southwestern United States poses a public health concern.