Capnocytophaga canimorsus

  • General information

    • the following information is not yet verified
      Taxonomy
      Family: Flavobacteriaceae, genus: C. canimorsus, C. cynodegmi

      Natural habitats
      It is a commensal bacteria in the normal gingival flora of canine and feline species.
      Transmission may occur through bites, licks or even close proximity with animals.

      Clinical significance
      A wound infection (dog bite) with these bacteria may cause serious local problems.

      Moreover, there is a high probability of a running fulminant sepsis, in wich multi-organ failure (MOF) may occur.

  • Gram stain

    • the following information is not yet verified
      Gram negative rods

      Cells are mainly fusiform, medium to long, with tapered ends

      Size: usually 1-3 µm in length.

      Wet mount slide
      Cultures that are in the log phase one sees a "sliding / floating" movement.

  • Culture characteristics

    • the following information is not yet verified

      Facultative anaerobic

      5% CO2 improves the growth

      After 24 hours, colonies may be up to 1 mm in diameter.
      After 48-72 hours, colonies are small, sphere, shiny and smooth, with spreading edges and not hemolytic.

      Colonies may appear to be purple, pink, or yellow, but once they are scraped from the agar plate they are always yellow in appearance.

      Gliding motility is seen in the growth of the colony
      (the edge spurs as a fringe).
      This is not always present

      BACTEC
      Is not always able to detect the Capnocytophaga

      McConkey no growth

      BBAØ growth

  • Characteristics

  • References

    • James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition


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