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Moraxella catarrhalis is a topic covered in the Johns Hopkins ABX Guide.

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MICROBIOLOGY

  • Gram-negative diplococcus, appears identical to N. gonorrhoeae.
    • Previously known as Branhamella
    • May occasionally be misidentified in the lab as N. cinerea, N. flavescens, or as a glucose-negative strain of N. gonorrhoeae.
  • Grows easily on blood chocolate agar, 28º C.
  • Colonizes upper airways in 5-15% of population, found only in humans.
    • Most frequently found as part of normal flora for infants and children, decreases in adults.
  • Commonly produces beta-lactamase, 95% of strains resistant to amoxicillin.

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Last updated: May 29, 2016

Citation

Auwaerter, Paul G, and John G Bartlett. "Moraxella Catarrhalis." Johns Hopkins ABX Guide, The Johns Hopkins University, 2016. Johns Hopkins Guide, www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540353/all/Moraxella_catarrhalis.
Auwaerter PG, Bartlett JG. Moraxella catarrhalis. Johns Hopkins ABX Guide. The Johns Hopkins University; 2016. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540353/all/Moraxella_catarrhalis. Accessed May 24, 2019.
Auwaerter, P. G., & Bartlett, J. G. (2016). Moraxella catarrhalis. In Johns Hopkins ABX Guide. Available from https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540353/all/Moraxella_catarrhalis
Auwaerter PG, Bartlett JG. Moraxella Catarrhalis [Internet]. In: Johns Hopkins ABX Guide. The Johns Hopkins University; 2016. [cited 2019 May 24]. Available from: https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540353/all/Moraxella_catarrhalis.
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TY - ELEC T1 - Moraxella catarrhalis ID - 540353 A1 - Auwaerter,Paul,M.D. AU - Bartlett,John,M.D. Y1 - 2016/05/29/ BT - Johns Hopkins ABX Guide UR - https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540353/all/Moraxella_catarrhalis PB - The Johns Hopkins University DB - Johns Hopkins Guide DP - Unbound Medicine ER -