Johns Hopkins Antibiotic (ABX) GuidePathogensBacteria

Kingella species

Paul Auwaerter, M.D.
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MICROBIOLOGY

  • Fastidious, Gram-negative aerobic coccobacillus of Neisseriaceae family.
    • Labs may misidentify due to organism’s tendency for crystal violet dye retention, therefore appearing Gram positive.
    • β-hemolytic, catalase negative; will not grow on MacConkey agar.
    • Polysaccharide capsule aids in virulence and invasive abilities.
  • Part of normal respiratory and GU flora, especially in children (colonization rates 9-12% ages 12-24 mos).
  • Kingella kingae most frequent human pathogen.
    • Other occasional species include K. dentrificans and K. oralis.
  • Generally susceptible to many antibiotic classes.

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Last updated: February 27, 2016