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Published on: February 9, 2011
Group A streptococcal subdural empyema as a complication of varicella
Rolando Ulloa-Gutierrez1, Simon Dobson, John Forbes
1Pediatric Infectious Diseases Division, Department of Pediatrics, British Columbia's Children's Hospital, and the University of British Columbia, Vancouver, British Columbia, Canada. rgut@cw.bc.ca <rgut@cw.bc.ca>
Abstract:
Group A beta-hemolytic streptococcus and Staphylococcus aureus are the 2 most common pathogens implicated in secondary invasive bacterial disease after varicella. We describe a 3-month-old male infant from British Columbia, Canada, who presented on day 5 of varicella skin rash with fever, seizures, lethargy, and evidence of intracranial hypertension. A prominent subdural empyema was documented, and Streptococcus pyogenes was recovered from the subdural fluid. Central nervous system bacterial complications should be part of the differential diagnosis for infants and children with chickenpox who present with fever, lethargy, focal seizures, or similar neurologic findings. This case illustrates the importance of universal varicella vaccination to prevent associated bacterial complications of chickenpox.
Insights
Group A Streptococcus, a common cause of bacterial infections after chickenpox, led to a subdural empyema in an infant. Early recognition and varicella vaccination are crucial for preventing severe complications.
Area of Science:
- Pediatrics
- Infectious Diseases
- Neurology
Background:
- Varicella (chickenpox) can lead to secondary invasive bacterial infections.
- Group A beta-hemolytic Streptococcus and Staphylococcus aureus are the most frequent pathogens.
- Prompt diagnosis and management are critical for favorable outcomes.
Observation:
- A 3-month-old infant presented with fever, seizures, and lethargy on day 5 of varicella rash.
- Intracranial hypertension and a subdural empyema were identified.
- Streptococcus pyogenes was isolated from the subdural fluid.
Findings:
- The infant developed a severe central nervous system complication, subdural empyema, secondary to varicella.
- Streptococcus pyogenes was identified as the causative agent.
- This case highlights a rare but serious bacterial complication of chickenpox.
Implications:
- Central nervous system bacterial complications should be considered in infants and children with varicella exhibiting neurological symptoms.
- Early recognition and intervention are vital for managing these severe infections.
- Universal varicella vaccination is essential for preventing such potentially life-threatening complications.
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Chickenpox
Cryptococcal Meningitis
Bacterial Meningitis I: Introduction
Bacterial Meningitis II: Pathophysiology
Encephalitis l: Introduction
Brain Abscess l: Introduction

