Staphylococcus aureus Central Nervous System Infections in Children

Jesus G Vallejo1, Alexandra N Cain, Edward O Mason

  • 1From the *Department of Pediatrics, Section of Infectious Diseases, Baylor College of Medicine and Texas Children's Hospital, Houston, Texas.

Insights

Pediatric Staphylococcus aureus central nervous system (CNS) infections are uncommon but can be severe. Methicillin-sensitive S. aureus (MSSA) caused most cases, often linked to devices, while methicillin-resistant S. aureus (MRSA) emerged in community settings.

Area of Science:

  • Pediatric Infectious Diseases
  • Neuroscience
  • Microbiology

Background:

  • Central nervous system (CNS) infections due to Staphylococcus aureus are rare in children.
  • This study reviews the epidemiology, clinical presentation, and treatment of S. aureus CNS infections in pediatric patients.

Purpose of the Study:

  • To analyze the characteristics and outcomes of Staphylococcus aureus CNS infections in a pediatric population.
  • To understand the evolving epidemiology of S. aureus CNS infections, including the roles of MSSA and MRSA.

Main Methods:

  • Retrospective review of pediatric cases with S. aureus CNS infection (positive CSF cultures or spinal epidural abscess) from 2001-2013.
  • Analysis of infection sources (device-associated, postoperative, hematogenous), causative strains (MSSA vs. MRSA), treatments, and outcomes.

Main Results:

  • Out of 68 patients, 70 S. aureus CNS infections were identified, with 70% secondary to CNS devices.
  • Methicillin-sensitive S. aureus (MSSA) accounted for 67.2% of infections, while methicillin-resistant S. aureus (MRSA) caused 32.8%, often in community-acquired cases (USA300/pvl).
  • Most patients received nafcillin (MSSA) or vancomycin (MRSA); MRSA infections showed a favorable response to vancomycin, though optimal trough levels and combination therapy effects were uncertain. Only one death occurred.

Conclusions:

  • The epidemiology of invasive S. aureus CNS infections is dynamic, with MSSA remaining predominant, often associated with neurosurgical procedures.
  • Community-acquired S. aureus meningitis and spinal epidural abscesses occurred in previously healthy children.
  • Vancomycin appears effective for MRSA CNS infections, but further research is needed on optimal dosing strategies and the benefits of combination therapy.
Abstract

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