Viridans group streptococci

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Microbiology

  • Gram-positive cocci
  • Commensal oral flora

Organisms

  • S. anginosus group (previously milleri group): most likely to cause invasive pyogenic infections similar to Staphylococcus aureus
    • S. anginosus
    • S. intermedius
    • S. constellatus
  • S. mitis group
    • S. mitis
    • S. oralis
  • S. sanguinis group
    • S. gordonii
    • S. sanguinis
    • S. parasanguinis
  • S. salivarius group
    • S. salivarius
    • S. vestibularis
    • S. thermophilus
  • S. mutans group
    • S. mutans

Further Reading

  • It’s Not Easy Being Green: the Viridans Group Streptococci, with a Focus on Pediatric Clinical Manifestations. J Clin Microbiol. 2010;48(11):3829-3835. DOI: 10.1128/JCM.01563-10

References

  1. ^  Sejong Chun, Hee Jae Huh, Nam Yong Lee. Species-Specific Difference in Antimicrobial Susceptibility Among Viridans Group Streptococci. Annals of Laboratory Medicine. 2015;35(2):205-211. doi:10.3343/alm.2015.35.2.205.