Kingella kingae

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Gram stain Culture

General information
- the following information is not yet verified
  Taxonomy
  Family: Neisseriaceae
  K. kingae
  K. denitrificans
  K. oralis
  
  Natural habitats
  They colonizes the throat but not the nasopharynx of many children ged 6month to 4 years.
  
  Clinical significans
  They show a predilection for bones an joints of previously healthy children under 4 years of age.
  Infections in adults occur more commonly in immunocompromised individuals or may present as HACEK endocarditis.
  
  Recovery from body fluids and pus can be difficult because these specimens seem to be inhibitory to the bacteria.
Gram stain
- the following information is not yet verified
  Short Gram negative rods,
  
  with square ends which lie together in pairs or clusters
  
  and tend to decolorize unevenly on Gram stain
Culture characteristics
- the following information is not yet verified
  
  Facultative anaerobic
  
  5% CO2 improves the growth
  
  BA: 2 types, after 48h colonies are 1-2mm
  1) colonies are smooth with a central papilla, small zone of hemolysis
  2) colonies showing spreading edges and pitting of the medium, small zone of hemolysis
  
  McConkey: no growth
  
  BBAØ: growth
  
  Viability is limited
Characteristics
References
- James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition