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STREPTOCOCCAL AND ENTEROCOCCAL INFECTIONS

STREPTOCOCCAL AND ENTEROCOCCAL INFECTIONS is a topic covered in the Harrison's Manual of Medicine.

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MICROBIOLOGY

Streptococci and enterococci are gram-positive cocci that form chains when grown in liquid media.

  • Culture on blood agar reveals three hemolytic patterns:
    • α-Hemolysis results in partial hemolysis that imparts a greenish appearance to agar. This pattern is seen with S. pneumoniae and viridans streptococci.
    • β-Hemolysis results in complete hemolysis around a colony. This pattern is seen with streptococci of Lancefield groups A, B, C, and G. Lancefield grouping is based on cell-wall carbohydrate antigens.
    • γ-Hemolysis describes the absence of hemolytic ability. This pattern is typical of enterococci, nonenterococcal group D streptococci, and anaerobic streptococci.
  • Streptococci and enterococci colonize the respiratory, GI, and genitourinary tracts as part of the normal flora. Several of these species are also important causes of human diseases.

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Citation

Loscalzo, Joseph, et al., editors. "STREPTOCOCCAL and ENTEROCOCCAL INFECTIONS." Harrison's Manual of Medicine, 19th ed., McGraw Hill Inc., 2017. harrisons.unboundmedicine.com/harrisons/view/Harrisons-Manual-of-Medicine/623648/all/STREPTOCOCCAL_AND_ENTEROCOCCAL_INFECTIONS.
STREPTOCOCCAL AND ENTEROCOCCAL INFECTIONS. In: Loscalzo J, Jameson JL, Longo DL, et al, eds. Harrison's Manual of Medicine. 19th ed. McGraw Hill Inc.; 2017. https://harrisons.unboundmedicine.com/harrisons/view/Harrisons-Manual-of-Medicine/623648/all/STREPTOCOCCAL_AND_ENTEROCOCCAL_INFECTIONS. Accessed April 23, 2019.
STREPTOCOCCAL AND ENTEROCOCCAL INFECTIONS. (2017). In Loscalzo, J., Jameson, J. L., Longo, D. L., Hauser, S. L., Fauci, A. S., & Kasper, D. L. (Eds.), Harrison's Manual of Medicine. Available from https://harrisons.unboundmedicine.com/harrisons/view/Harrisons-Manual-of-Medicine/623648/all/STREPTOCOCCAL_AND_ENTEROCOCCAL_INFECTIONS
STREPTOCOCCAL and ENTEROCOCCAL INFECTIONS [Internet]. In: Loscalzo J, Jameson JL, Longo DL, Hauser SL, Fauci AS, Kasper DL, editors. Harrison's Manual of Medicine. McGraw Hill Inc.; 2017. [cited 2019 April 23]. Available from: https://harrisons.unboundmedicine.com/harrisons/view/Harrisons-Manual-of-Medicine/623648/all/STREPTOCOCCAL_AND_ENTEROCOCCAL_INFECTIONS.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - STREPTOCOCCAL AND ENTEROCOCCAL INFECTIONS ID - 623648 ED - Loscalzo,Joseph, ED - Jameson,J Larry, ED - Longo,Dan L, ED - Hauser,Stephen L, ED - Fauci,Anthony S, ED - Kasper,Dennis L, BT - Harrison's Manual of Medicine UR - https://harrisons.unboundmedicine.com/harrisons/view/Harrisons-Manual-of-Medicine/623648/all/STREPTOCOCCAL_AND_ENTEROCOCCAL_INFECTIONS PB - McGraw Hill Inc. ET - 19 DB - Harrison's Manual of Medicine DP - Unbound Medicine ER -