Occult methicillin-resistant Staphylococcus aureus abscesses in 2 pediatric patients
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Updated: Jul 11, 2026

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
Published on: February 9, 2011
1University of Connecticut Health Center, Farmington, Connecticut 06030, USA. feder@nso2.uchc.edu
Abstract:
Methicillin-resistant Staphylococcus aureus (MRSA) infections have become more common over the last decade. Recently, severe MRSA infections including necrotizing pneumonia, purpura fulminans, and rapidly progressive skin abscesses have been reported. These severe infections frequently have been associated with the virulence factor Panton-Valentine leukocidin (PVL). Two unusual cases of occult deep tissue abscesses in children who had family members with a history of severe MRSA skin abscesses are presented in this article. Both children initially presented with fever without a focus. Deep tissue MRSA (PVL positive) abscesses evolved. Empiric antibiotic therapy for MRSA should be considered for infants and children who are hospitalized with occult fever and who have a family member with a history of MRSA infection.
Insights
Severe MRSA infections, often linked to Panton-Valentine leukocidin (PVL), are increasing. Consider MRSA antibiotics for children with unexplained fever and a family history of MRSA infections.
Area of Science:
- Pediatric Infectious Diseases
- Bacteriology
- Public Health
Background:
- Methicillin-resistant Staphylococcus aureus (MRSA) infections are rising globally.
- Severe MRSA infections, including necrotizing pneumonia and skin abscesses, are increasingly reported.
- The Panton-Valentine leukocidin (PVL) virulence factor is frequently associated with severe MRSA infections.
Observation:
- Two pediatric cases of occult deep tissue abscesses are presented.
- Both children initially presented with fever of unknown origin.
- A family history of severe MRSA skin abscesses was noted in both cases.
Findings:
- Deep tissue abscesses caused by PVL-positive MRSA evolved in both children.
- Early diagnosis and treatment are crucial for managing severe MRSA infections.
Implications:
- Empiric antibiotic therapy targeting MRSA should be considered for hospitalized infants and children with unexplained fever.
- A family history of MRSA infection warrants heightened clinical suspicion for severe MRSA disease.
- Understanding the role of PVL in severe MRSA infections is critical for effective treatment strategies.
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