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.
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
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
James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition
Karen C. Carrol et al (2019) Manual of Clinical Microbiology, 12th Edition