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Community-associated methicillin-resistant Staphylococcus aureus, Switzerland
Stephan Harbarth1, Patrice François, Jacques Shrenzel
1University of Geneva Hospitals, Geneva, Switzerland. stephan.harbarth@hcuge.ch
Emerging Infectious Diseases
|June 21, 2005
Summary
Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) is rare upon hospital admission, affecting less than 1% of patients. Researchers found no easily modifiable risk factors, even in cases with Panton-Valentine leukocidin.
Area of Science:
- Infectious Diseases
- Clinical Microbiology
- Epidemiology
Background:
- Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) is a significant public health concern.
- Understanding the prevalence and risk factors for CA-MRSA carriage at hospital admission is crucial for infection control.
Purpose of the Study:
- To determine the prevalence of CA-MRSA carriage among patients admitted to the hospital.
- To identify patient characteristics associated with CA-MRSA carriage at admission.
Main Methods:
- Two case-control studies were conducted.
- Prevalence of CA-MRSA carriage was assessed in 14,253 patients upon hospital admission.
- Patient data, including presence of Panton-Valentine leukocidin and history of skin infections, were analyzed.
Main Results:
- The overall prevalence of CA-MRSA carriage at hospital admission was 0.9 per 1,000 admissions.
- Five CA-MRSA isolates harbored the Panton-Valentine leukocidin toxin.
- Only one patient with CA-MRSA carriage reported a prior skin infection.
Conclusions:
- CA-MRSA carriage at hospital admission is uncommon.
- No readily modifiable risk factors for CA-MRSA carriage were identified in this patient cohort.
- Further research may be needed to elucidate potential risk factors and prevention strategies.