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.
Keywords:
ABCs; Active Bacterial Core surveillance; GAS; Lancefield group A antigen; Streptococccus equisimilis; Streptococcus dysgalactiae; Streptococcus pyogenes; bacteria; bacterial infections; invasive group A Streptococcus; multilocus sequence type; streptococci.
Publication types
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Historical Article
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Research Support, Non-U.S. Gov't
MeSH terms
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Adult
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Aged
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Aged, 80 and over
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Communicable Diseases, Emerging / epidemiology*
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Communicable Diseases, Emerging / history
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Communicable Diseases, Emerging / microbiology*
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Female
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Genes, Bacterial
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History, 21st Century
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Humans
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Male
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Middle Aged
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Phylogeny
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Streptococcal Infections / epidemiology*
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Streptococcal Infections / history
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Streptococcal Infections / microbiology*
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Streptococcus pyogenes / classification*
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Streptococcus pyogenes / genetics
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Streptococcus pyogenes / isolation & purification
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United States / epidemiology
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Virulence Factors / genetics
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Young Adult