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Updated: Feb 19, 2026
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Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus MRSA
Published on: February 9, 2011
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Frequent Undetected Ward-Based Methicillin-Resistant Staphylococcus aureus Transmission Linked to Patient Sharing
Olga Tosas Auguet1,2, Richard A Stabler3, Jason Betley4
1Centre for Clinical Infection and Diagnostics Research, Department of Infectious Diseases, King's College London and Guy's and St Thomas' NHS Foundation Trust.
Summary
Methicillin-resistant Staphylococcus aureus (MRSA) spreads frequently within hospital wards due to patient transfers between facilities. Sharing patient MRSA status data among hospitals is crucial for limiting transmission.
Area of Science:
- Infectious Disease Epidemiology
- Healthcare-Associated Infections
- Molecular Epidemiology
Background:
- Sustained infection control programs in UK hospitals appear to reduce methicillin-resistant Staphylococcus aureus (MRSA) transmission.
- The role of healthcare networks in sustaining MRSA levels requires further investigation.
Purpose of the Study:
- To analyze healthcare-network transmission paths of MRSA in UK hospitals.
- To investigate the genetic relatedness of MRSA isolates within and between healthcare facilities.
Main Methods:
- Cross-sectional observational study of MRSA patients in Southeast London NHS hospitals.
- Healthcare-network analysis to identify transmission clusters.
- Genetic analysis of MRSA isolates using single-nucleotide polymorphisms (SNPs).
Main Results:
- 90 MRSA transmission clusters identified, with 27 spanning multiple hospitals.
- Frequent patient contact within wards was observed in a large ST22-MRSA cluster.
- Genetic differentiation of MRSA isolates was lower between hospitals than within the same hospital.
Conclusions:
- Ward-based transmission of MRSA is frequent, driven by patient movement between hospitals.
- Sharing MRSA status data between hospitals is essential to curb in-ward transmission.
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