Fusobacterium varium

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Gram stain Culture

General information
- Taxonomy
  Family: Fusobacteriaceae
  
  Natural habitats
  Normal commensals of the human oropharynx, gastrointestinale tract, and female genital tract.
  
  Clinical significance
  Infection caused by Fusobacterium varium is vary rare.
  The organism has been isolated mostly from intra abdominal infections
Gram stain
- Large Gram negative rods,
  
  with round ends
Culture characteristics
- Obligate anaerobic
  
  BBAØ: after 2 days of incubation, on BBAØ, colonies 1 to 2 mm in diameter, nonhemolytic, semi translucent, umbonate, with erose edges.
  
  Lipase positive strains are often β-hemolytic
  
  BBEØ: no growth
  
  Fluorescentie/Woodslamp chartreuse / yellow-green
Characteristics
References
- James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition