Two cases of subcutaneous Scedosporium apiospermum infection treated with voriconazole

F Bosma1, A Voss, H W van Hamersvelt

  • 1Department of Medical Microbiology, University Medical Center Nijmegen, PO Box 9101, 6500 HB, Nijmegen, The Netherlands. F.Bosma@mmb.umcn.nl

Insights

Two immunocompromised patients with Scedosporium apiospermum infections were successfully treated with voriconazole. Investigations found no common nosocomial source, suggesting independent infections rather than an outbreak.

Area of Science:

  • Mycology
  • Infectious Diseases
  • Clinical Medicine

Background:

  • Scedosporium apiospermum is an emerging opportunistic mold pathogen.
  • This fungus exhibits intrinsic resistance to many antifungal drugs.
  • Infections are particularly concerning in immunocompromised individuals.

Observation:

  • Two cases of S. apiospermum infection occurred within a two-week period in a hospital setting.
  • Both patients, despite the uncommon pathogen, were successfully treated with voriconazole.
  • A thorough investigation for a common nosocomial source was initiated.

Findings:

  • Environmental cultures did not yield Scedosporium apiospermum.
  • Random amplified polymorphic DNA (RAPD) fingerprinting revealed that the patient isolates were genotypically distinct.
  • A common nosocomial source for these two infections was deemed unlikely.

Implications:

  • Voriconazole demonstrates efficacy in treating Scedosporium apiospermum infections.
  • The findings suggest that S. apiospermum infections in immunocompromised patients may arise from independent sources rather than a single outbreak.
  • Further research into the epidemiology and treatment of S. apiospermum is warranted.

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