Selective Methicillin-Resistant Staphylococcus Aureus (MRSA) screening of a high risk population does not adequately detect MRSA carriers within a country with low MRSA prevalence

de Wouters , Solange;Daxhelet, Jérémy;Kaminski, Ludovic;Thienpont, Emmanuel;Yombi, Jean Cyr;et.al.
(2015) Acta Orthopaedica Belgica (Bilingual Edition) — Vol. 81, n° 4, p. 620-628 (2015)

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BACKGROUND: Methicillin-Resistant Staphylococcus Aureus (MRSA) has been widely recognized as a -serious problem in hospital settings. The purpose of this study is to evaluate the predictive value of MRSA colonization factors in the detection of MRSA carriers in an orthopedic ward. METHODS: A systematic MRSA detection strategy was set up to assess the predictive value of MRSA colonization factors among 554 patients -undergoing elective knee arthroplasty. RESULTS: In total 116 patients were found positive for Staphylococcus Aureus ; among those 110/116 patients were found positive for Methicillin-Sensitive Staphylococcus Aureus (MSSA) and 6/116 for MRSA. Only one patient out of six presented two risk factors -according to MRSA risk factors. In this study, no -correlation was found between the remaining conventional risk factors, according to Belgian guidelines, defined to target high-risk populations and to identify MRSA carriers. CONCLUSION: Established criteria for selective MRSA screening do not allow detecting MRSA carriers. The objective of detecting MRSA carriers is not correctly met by the actual applied criteria (Belgian consensus) for a selective screening policy. Future studies should aim at identifying the right risk factors, depending of the country's prevalence of MRSA, to improve the ability to predict the risk of MRSA carriage at hospital admission.
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de Wouters, S., Daxhelet, J., Kaminski, L., Thienpont, E., Cornu, O., & Yombi, J. C. (2015). Selective Methicillin-Resistant Staphylococcus Aureus (MRSA) screening of a high risk population does not adequately detect MRSA carriers within a country with low MRSA prevalence. Acta Orthopaedica Belgica (Bilingual Edition), 81(4), 620-628. https://hdl.handle.net/2078.5/32782 (Original work published 2015)