[Infections after bone marrow transplantation in childhood]

Area of Science:

• Pediatric Hematology Oncology
• Infectious Diseases
• Transplantation Immunology

Context:

• Bone marrow transplantation (BMT) is a critical treatment for pediatric hematologic malignancies and other conditions.
• Post-BMT patients are highly susceptible to infections due to immunosuppression.
• Understanding infection patterns is crucial for improving outcomes in pediatric BMT.

Purpose:

• To retrospectively analyze the incidence and types of infections in children following bone marrow transplantation.
• To identify the most common bacterial, viral, and fungal pathogens encountered post-BMT.
• To assess the impact of specific infections on patient prognosis and complications.

Summary:

• Bacterial infections were most prevalent in the early post-transplant period before marrow engraftment.
• Gram-positive bacteria, particularly coagulase-negative staphylococci, dominated positive blood cultures.
• Cytomegalovirus (CMV) infections were significant due to high incidence and association with CMV-associated interstitial pneumonia (IP).
• Fungal infections, notably systemic aspergillosis, represented a major complication.
• Herpes simplex virus (HSV), varicella zoster virus (VZV), and Epstein Barr virus (EBV) infections did not significantly affect prognosis.

Impact:

• Findings underscore the importance of vigilant monitoring for bacterial and viral infections in the early post-BMT phase.
• Highlights Cytomegalovirus (CMV) as a critical pathogen requiring specific attention and management strategies.
• Suggests that therapeutic drug monitoring of antibiotic and antifungal serum levels can enhance treatment efficacy and safety.