Emerging Infectious Diseases (Aug 2019)
Emergent Invasive Group A Streptococcus dysgalactiae subsp. equisimilis, United States, 2015–2018
Abstract
The term group A Streptococcus is considered synonymous for the species Streptococcus pyogenes. We describe an emergent invasive S. dysgalactiae subspecies equisimilis lineage that obtained the group A antigen through a single ancestral recombination event between a group C S. dysgalactiae subsp. equisimilis strain and a group A S. pyogenes strain.
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