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Disseminated fusariosis occurring in two patients despite posaconazole prophylaxis

Prithviraj Bose1, Hiral D Parekh, Jennifer L Holter

  • 1Section of Hematology/Oncology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.

Journal of Clinical Microbiology
|January 29, 2011
PubMed

Insights

Posaconazole prophylaxis failed to prevent disseminated fusariosis in two patients undergoing myeloablative therapy. This highlights the need for further research into effective antifungal strategies for high-risk patients.

Area of Science:

  • Mycology
  • Infectious Diseases
  • Hematology

Background:

  • Posaconazole is a key antifungal agent for preventing invasive fungal infections in immunocompromised patients, particularly those receiving myeloablative therapy.
  • Invasive fungal infections, such as disseminated fusariosis, pose a significant threat to patients undergoing intensive cancer treatments.
  • Fusarium species are emerging as important pathogens in this vulnerable population.

Observation:

  • This study reports two cases of disseminated fusariosis.
  • Both patients were receiving posaconazole for prophylaxis against invasive fungal infections.
  • The infections occurred despite adherence to the prescribed posaconazole regimen.

Findings:

  • Disseminated fusariosis developed in two patients despite documented posaconazole prophylaxis.
  • These cases suggest that posaconazole may not be universally effective in preventing Fusarium infections in all high-risk patients.
  • Further investigation into Fusarium's susceptibility and alternative prophylaxis is warranted.

Implications:

  • The findings challenge the current standard of care for antifungal prophylaxis in certain high-risk patient groups.
  • There is a critical need to explore alternative or adjunctive antifungal therapies for preventing invasive mold infections.
  • This research underscores the importance of vigilant monitoring and early diagnosis of breakthrough fungal infections in immunocompromised individuals.

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