Stenotrophomonas maltophilia

Valeria Fabre, M.D.


  • Non-fermenting Gram-negative rod [Fig], easily grown on standard media.
    • Previously referred to as Pseudomonas maltophilia.
  • Ubiquitous organism: found in water, soil and plants.
  • Considered low virulence and frequent colonizer of body fluids, especially in patients exposed to high-intensity courses of antibiotics.
  • Environmental and clinical isolates often exhibit multiple antibiotic resistance.
  • S. maltophila tends to adhere and form biofilms to catheters and prosthetic devices.

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Last updated: July 13, 2024