Viridans group streptococci: Difference between revisions

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== Microbiology ==
== Background ==


=== Microbiology ===
* Gram-positive cocci
* Gram-positive cocci
* Commensal oral flora
* Commensal oral flora


== Organisms ==
=== Species ===
* ''S. anginosus'' group (previously milleri group): most likely to cause invasive pyogenic infections similar to ''[[Staphylococcus aureus]]''
* [[Streptococcus anginosus group]] (previously milleri group): most likely to cause invasive pyogenic infections similar to ''[[Staphylococcus aureus]]''
** ''S. anginosus''
** ''[[Streptococcus anginosus]]''
** ''S. intermedius''
** ''[[Streptococcus intermedius]]''
** ''S. constellatus''
** ''[[Streptococcus constellatus]]''
* ''S. mitis'' group
* [[Streptococcus mitis group]]
** ''S. mitis''
** ''[[Streptococcus mitis]]''
** ''S. oralis''
** ''[[Streptococcus oralis]]''
* ''S. sanguinis'' group
* [[Streptococcus sanguinis group]]
** ''S. gordonii''
** ''[[Streptococcus gordonii]]''
** ''S. sanguinis''
** ''[[Streptococcus sanguinis]]''
** ''S. parasanguinis''
** ''[[Streptococcus parasanguinis]]''
* ''S. salivarius'' group
* [[Streptococcus salivarius group]]
** ''S. salivarius''
** ''[[Streptococcus salivarius]]''
** ''S. vestibularis''
** ''[[Streptococcus vestibularis]]''
** ''S. thermophilus''
** ''[[Streptococcus thermophilus]]''
* ''S. mutans'' group
* [[Streptococcus mutans group]]
** ''S. mutans''
** ''[[Streptococcus mutans]]''

== Management ==

* Penicillin non-susceptibility varies by species
** [[Streptococcus salivarius group]] is 80% non-susceptible (in Korea[[CiteRef::chun2015sp]])
** [[Streptococcus mitis group]] is 60%
** [[Streptococcus sanguinis group]] is 40%
** [[Streptococcus anginosus group]] is 6%


== Further Reading ==
== Further Reading ==

Latest revision as of 17:49, 19 September 2024

Background

Microbiology

  • Gram-positive cocci
  • Commensal oral flora

Species

Management

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.