Tags

Type your tag names separated by a space and hit enter

Streptococcus pyogenes (Group A)

Streptococcus pyogenes (Group A) is a topic covered in the Johns Hopkins ABX Guide.

To view the entire topic, please or purchase a subscription.

Official website of the Johns Hopkins Antibiotic (ABX), HIV, Diabetes, and Psychiatry Guides, powered by Unbound Medicine. Johns Hopkins Guide App for iOS, iPhone, iPad, and Android included. Explore these free sample topics:

Johns Hopkins Guides

-- The first section of this topic is shown below --

MICROBIOLOGY

  • Group A Streptococcus (GAS), beta-hemolytic--grows on blood agar. See Streptococcal species or S. pneumoniae modules for other streptococci.
    • Streptococcus pyogenes, Lancefield group A.
    • Gram-positive cocci in chains [Fig 1].
  • Ecologic niches are pharynx, genital mucosa and skin; colonization rates:
    • Adults 2-3%
    • School children 15-20%
  • Virulence depends on proteins that represent toxins, mimic host macromolecules and after immune responses.
    • M protein gene (emm) ~100 serotypes
      • May be used to track outbreaks, public health tracking of invasive infections
      • Certain types (emm1, emm3, emm4, emm6, emm12, emm18, emm89) associated with most cases of invasive infections.

-- To view the remaining sections of this topic, please or purchase a subscription --

Last updated: August 9, 2019

Citation

Auwaerter, Paul G, and John G Bartlett. "Streptococcus Pyogenes (Group A)." Johns Hopkins ABX Guide, The Johns Hopkins University, 2019. Johns Hopkins Guide, www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540524/all/Streptococcus_pyogenes__Group_A_.
Auwaerter PG, Bartlett JG. Streptococcus pyogenes (Group A). Johns Hopkins ABX Guide. The Johns Hopkins University; 2019. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540524/all/Streptococcus_pyogenes__Group_A_. Accessed August 21, 2019.
Auwaerter, P. G., & Bartlett, J. G. (2019). Streptococcus pyogenes (Group A). In Johns Hopkins ABX Guide. Available from https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540524/all/Streptococcus_pyogenes__Group_A_
Auwaerter PG, Bartlett JG. Streptococcus Pyogenes (Group A) [Internet]. In: Johns Hopkins ABX Guide. The Johns Hopkins University; 2019. [cited 2019 August 21]. Available from: https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540524/all/Streptococcus_pyogenes__Group_A_.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - Streptococcus pyogenes (Group A) ID - 540524 A1 - Auwaerter,Paul,M.D. AU - Bartlett,John,M.D. Y1 - 2019/08/09/ BT - Johns Hopkins ABX Guide UR - https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540524/all/Streptococcus_pyogenes__Group_A_ PB - The Johns Hopkins University DB - Johns Hopkins Guide DP - Unbound Medicine ER -