Viridans group streptococci - Revision history

Aidan at 18:50, 24 February 2026

2026-02-24T18:50:59Z

← Older revision		Revision as of 18:50, 24 February 2026
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	=== Microbiology ===		=== Microbiology ===
	* Group of [[Stain::Gram-positive]] [[Shape::coccus\|~~Shape~~::~~cocci~~]]		* Group of [[Stain::Gram-positive]] [[Shape::coccus\|cocci]] within the genus [[Genus::Streptococcus]]
	* Commensal oral flora		* Commensal oral flora

Aidan: /* Management */

2025-12-16T15:53:39Z

Management

← Older revision		Revision as of 15:53, 16 December 2025
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	=== Microbiology ===		=== Microbiology ===
	* Gram-positive cocci		* Group of [[Stain::Gram-positive]] [[Shape::coccus\|Shape::cocci]]
	* Commensal oral flora		* Commensal oral flora

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	== Management ==		== Management ==

			* Most commonly [[penicillin]] or [[ceftriaxone]], or [[vancomycin]] for resistant isolates
	* Penicillin non-susceptibility varies by species		* Penicillin non-susceptibility varies by species
	** [[Streptococcus salivarius group]] is 80% non-susceptible (in Korea[[CiteRef::chun2015sp]])		** [[Streptococcus salivarius group]] is 80% non-susceptible (in Korea[[CiteRef::chun2015sp]])
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	** [[Streptococcus sanguinis group]] is 40%		** [[Streptococcus sanguinis group]] is 40%
	** [[Streptococcus anginosus group]] is 6%		** [[Streptococcus anginosus group]] is 6%
			* Ceftriaxone does ''not'' predict susceptibility to oral cephalosporins

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

Aidan at 17:49, 19 September 2024

2024-09-19T17:49:39Z

← Older revision		Revision as of 17:49, 19 September 2024
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	=== Species ===		=== Species ===
	* [[Streptococcus anginosus ~~group\|''Streptococcus 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]]''
	** ''[[Streptococcus anginosus]]''		** ''[[Streptococcus anginosus]]''
	** ''[[Streptococcus intermedius]]''		** ''[[Streptococcus intermedius]]''
	** ''[[Streptococcus constellatus]]''		** ''[[Streptococcus constellatus]]''
	* [[Streptococcus mitis ~~group\|''Streptococcus mitis''~~ group]]		* [[Streptococcus mitis group]]
	** ''[[Streptococcus mitis]]''		** ''[[Streptococcus mitis]]''
	** ''[[Streptococcus oralis]]''		** ''[[Streptococcus oralis]]''
	* [[Streptococcus sanguinis ~~group\|''Streptococcus sanguinis''~~ group]]		* [[Streptococcus sanguinis group]]
	** ''[[Streptococcus gordonii]]''		** ''[[Streptococcus gordonii]]''
	** ''[[Streptococcus sanguinis]]''		** ''[[Streptococcus sanguinis]]''
	** ''[[Streptococcus parasanguinis]]''		** ''[[Streptococcus parasanguinis]]''
	* [[Streptococcus salivarius ~~group\|''Streptococcus salivarius''~~ group]]		* [[Streptococcus salivarius group]]
	** ''[[Streptococcus salivarius]]''		** ''[[Streptococcus salivarius]]''
	** ''[[Streptococcus vestibularis]]''		** ''[[Streptococcus vestibularis]]''
	** ''[[Streptococcus thermophilus]]''		** ''[[Streptococcus thermophilus]]''
	* [[Streptococcus mutans ~~group\|''Streptococcus mutans''~~ group]]		* [[Streptococcus mutans group]]
	** ''[[Streptococcus mutans]]''		** ''[[Streptococcus mutans]]''

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

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

Aidan: added some resistance data

2022-09-19T21:16:58Z

added some resistance data

← Older revision		Revision as of 21:16, 19 September 2022
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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 ==

Aidan: added links

2022-07-22T02:20:18Z

added links

← Older revision		Revision as of 02:20, 22 July 2022
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	== Organisms ==		== Organisms ==
	* ''S. 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]]''
	** ''S. anginosus''		** ''[[Streptococcus anginosus]]''
	** ''S. intermedius''		** ''[[Streptococcus intermedius]]''
	** ''S. constellatus''		** ''[[Streptococcus constellatus]]''
	* ''S. mitis'' group		* [[Streptococcus mitis group\|''Streptococcus mitis'' group]]
	** ''S. mitis''		** ''[[Streptococcus mitis]]''
	** ''S. oralis''		** ''[[Streptococcus oralis]]''
	* ''S. sanguinis'' group		* [[Streptococcus sanguinis group\|''Streptococcus sanguinis'' group]]
	** ''S. gordonii''		** ''[[Streptococcus gordonii]]''
	** ''S. sanguinis''		** ''[[Streptococcus sanguinis]]''
	** ''S. parasanguinis''		** ''[[Streptococcus parasanguinis]]''
	* ''S. salivarius'' group		* [[Streptococcus salivarius group\|''Streptococcus salivarius'' group]]
	** ''S. salivarius''		** ''[[Streptococcus salivarius]]''
	** ''S. vestibularis''		** ''[[Streptococcus vestibularis]]''
	** ''S. thermophilus''		** ''[[Streptococcus thermophilus]]''
	* ''S. mutans'' group		* [[Streptococcus mutans group\|''Streptococcus mutans'' group]]
	** ''S. mutans''		** ''[[Streptococcus mutans]]''

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

Aidan: /* Organisms */

2020-03-06T15:45:27Z

Organisms

← Older revision		Revision as of 15:45, 6 March 2020
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	== Organisms ==		== Organisms ==
	* ''S. anginosus'' group (previously milleri group)		* ''S. anginosus'' group (previously milleri group): most likely to cause invasive pyogenic infections similar to ''[[Staphylococcus aureus]]''
	** ''S. anginosus''		** ''S. anginosus''
	** ''S. intermedius''		** ''S. intermedius''

Aidan: /* Organisms */ updated species classifications and added reading

2020-03-06T15:40:30Z

Organisms: updated species classifications and added reading

@@ Line 5: / Line 5: @@
 == Organisms ==
 ** ''S. anginosus''
 ** ''S. intermedius''
 [[Category:Gram-positive cocci]]

Aidan: Aidan moved page Viridans group Streptococci to Viridans group streptococci over redirect: to confirm with CDC EID guidelines on nomenclature

2020-02-15T00:39:04Z

Aidan moved page Viridans group Streptococci to Viridans group streptococci over redirect: to confirm with CDC EID guidelines on nomenclature

← Older revision		Revision as of 00:39, 15 February 2020
(No difference)

Aidan: Aidan moved page Viridans group streptococci to Viridans group Streptococci

2019-08-19T23:23:23Z

Aidan moved page Viridans group streptococci to Viridans group Streptococci

← Older revision		Revision as of 23:23, 19 August 2019
(No difference)

Aidan: /* Organisms */

2019-08-19T23:23:16Z

Organisms

← Older revision		Revision as of 23:23, 19 August 2019
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	** ''S. constellatus''		** ''S. constellatus''
	** ''S. intermedius''		** ''S. intermedius''

			[[Category:Gram-positive cocci]]