A parainfluenza-3 outbreak in a SCT unit: sepsis with multi-organ failure and multiple co-pathogens are associated

A Hodson1, M Kasliwal, M Streetly

  • 1Department of Haematology, Guy's and St Thomas' NHS Foundation Trust, London, UK.

Insights

Parainfluenza virus 3 (PIV-3) infections pose a high mortality risk in hematopoietic stem cell transplant (HSCT) recipients. Prompt risk assessment and broad-spectrum antimicrobials are crucial for managing PIV-3 in these vulnerable patients.

Area of Science:

  • Infectious Diseases
  • Hematology
  • Transplant Medicine

Background:

  • Parainfluenza virus 3 (PIV-3) is a significant pathogen following hematopoietic stem cell transplantation (HSCT).
  • Reported PIV-3 infection rates post-HSCT range from 2-7%, with mortality between 18-33%.

Purpose of the Study:

  • To analyze outcomes of PIV-3 infection during an outbreak in a transplant unit.
  • To identify factors associated with mortality in HSCT patients with PIV-3 infection.

Main Methods:

  • Retrospective outcome analysis of 16 HSCT patients diagnosed with PIV-3 infection.
  • Evaluation of treatment protocols including aerosolized Ribavirin and intravenous immunoglobulin (IVIG).
  • Statistical analysis to determine factors associated with PIV-3 related mortality.

Main Results:

  • All 16 patients experienced upper respiratory tract infections; 8 developed lower respiratory tract infections.
  • Overall mortality was 62.5%, significantly higher than previously reported.
  • Sepsis with multi-organ failure and pulmonary co-pathogens were significantly associated with increased mortality.

Conclusions:

  • PIV-3 infection carries a high mortality rate in HSCT recipients.
  • Despite infection control, PIV-3 remains a threat.
  • Risk assessment and prompt broad-spectrum antimicrobial use are recommended for high-risk patients to mitigate secondary infections and mortality.

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