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 ===
* [[Streptococcus anginosus group|''Streptococcus anginosus'' group]] (previously milleri group): most likely to cause invasive pyogenic infections similar to ''[[Staphylococcus aureus]]''
* [[Streptococcus anginosus group|''Streptococcus anginosus'' group]] (previously milleri group): most likely to cause invasive pyogenic infections similar to ''[[Staphylococcus aureus]]''
** ''[[Streptococcus anginosus]]''
** ''[[Streptococcus anginosus]]''
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* [[Streptococcus mutans group|''Streptococcus mutans'' group]]
* [[Streptococcus mutans group|''Streptococcus mutans'' group]]
** ''[[Streptococcus mutans]]''
** ''[[Streptococcus mutans]]''

== Management ==

* Penicillin non-susceptibility varies by species
** ''S. salivarius'' group is 80% non-susceptible (in Korea<ref>Chun S, Huh HJ, Lee NY. Species-specific difference in antimicrobial susceptibility among viridans group streptococci. Ann Lab Med. 2015 Mar;35(2):205-11. doi: [https://doi.org/10.3343/alm.2015.35.2.205 10.3343/alm.2015.35.2.205]. Epub 2015 Feb 12. PMID: 25729722; PMCID: [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4330170/ PMC4330170].</ref>)
** ''S. mitis'' group is 60%
** ''S. sanguinis'' group is 40%
** ''S. anginosus'' group is 6%


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

Revision as of 21:16, 19 September 2022

Background

Microbiology

  • Gram-positive cocci
  • Commensal oral flora

Species

Management

  • Penicillin non-susceptibility varies by species
    • S. salivarius group is 80% non-susceptible (in Korea[1])
    • S. mitis group is 60%
    • S. sanguinis group is 40%
    • S. anginosus group is 6%

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
  1. Chun S, Huh HJ, Lee NY. Species-specific difference in antimicrobial susceptibility among viridans group streptococci. Ann Lab Med. 2015 Mar;35(2):205-11. doi: 10.3343/alm.2015.35.2.205. Epub 2015 Feb 12. PMID: 25729722; PMCID: PMC4330170.

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.