Stenotrophomonas maltophilia

Stenotrophomonas maltophilia


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General Information

Aerobic non-fermenting gram negative rod

May be acquired from diverse environmental sources (e.g. tap water).

Bronchiectatic patients may be colonized (i.e. cystic fibrosis).

Must distinguish colonization from clinically significant infection.

Most common infections:

  • Blood stream infection (usually from vascular catheter)
  • Pneumonia

Other rare manifestations:

  • Endocarditis
  • Sinusitis
  • Cellulitis

May require additional precautions if highly resistant (CRE/CPO)