Clostridium ramosum (Thomasclavelia ramosa)

Display:

Gram stain Culture

General information
- Taxonomy
  Family: Clostridiaceae
  Genus: Thomasclavella ramosa
  Formely: Clostridium ramosum
  
  Natural habitats
  Ubiquitous in nature, being found in the soil and feces from animals and human.
  
  Isolated from infants and adult feces.
  
  They may be found in other parts of the human body.
  
  Clinical significance
  The 2 most frequently encountered in wound and abscess materials are C. perfringens and C. ramosum.
  
  Identified from clinical specimens from children, including those with abscesses, peritonitis, bacteremia, and chronic otitis media.
  
  Bacteremia in adults.
Gram stain
- Gram positive often Gram negative stained rods;
  
  palisading, slender rods 0.5-0.9 x 2.0-12.8 µm,
  
  occuring singly, in pairs or in short chains, often in "V"arrangements, with a "rail fence" appearance, or in irregular masses.
  
  Spores are very rarely seen
  Spores round/oval // terminal
  Swelling of the cell positive
Culture characteristics
- obligate anaerobic
  
  BBAØ: colonies resemble Bacteroides fragilis but usually have a slightly irregular edge.
  
  Nonhemolytic.
Characteristics
References
- James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition