Do infection control measures work for methicillin-resistant Staphylococcus aureus?
OBJECTIVE: To review evidence regarding the effectiveness of control measures in reducing transmission of methicillin-resistant Staphylococcus aureus (MRSA) in hospitals. DESIGN: Literature review and surveillance cultures of hospitalized patients at high risk for MRSA colonization or infection. SETTING: A 500-bed, university-affiliated, community teaching hospital. RESULTS: The percentage of nosocomial S. aureus infections caused by MRSA increased significantly between 1982 and 2002, despite the use of various isolation and barrier precaution policies. The apparent ineffectiveness of control measures may be due to several factors including the failure to identify patients colonized with MRSA. For example, cultures of stool specimens submitted for Clostridium difficile toxin assays at one hospital found that 12% of patients had MRSA in their stool, and 41% of patients with unrecognized colonization were cared for without using barrier precautions. Other factors include the use of barri
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