Campylobacter ureolyticus

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Gram stain Culture

General information
- C. ureolyticus is phenotypically close to C. gracilis
  
  They are actually microaerophilic rather than obligates anaerobes.
  
  Taxonomy
  Family: Bacteroidaceae
  Formerly: Bacteroides ureolyticus
  
  Natural habitats
  They are part of the flora of the mouth.
  
  Clinical significance
  Isolated from patients with infections of the lung, neck, abdomen, oral cavity, urogenital, bone and tissue.
Gram stain
- Thin Gram negative rods, slightly curved, with rounded ends
  
  0.5 x 1.5-4 µm.
  
  Filaments exceeding 20 µm in length may occur
Culture characteristics
- Obligate anaerobic
  
  BBAØ: the colonies are small, translucent, or transparent, and may produce greening of the agar.
  
  Three colony morphotypes exist:
  1) smooth and convex
  2) pitting
  3) spreading
  
  All three can occur in the same culture, so they may resemble a mixed culture.
  
  BBEØ: no growth
  
  Fluorescentie/Woodslamp
  Negative
Characteristics
References
- James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition