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Methicillin-Resistant Staphylococcus aureus (MRSA)

At the Johns Hopkins Hospital, we perform surveillance for healthcare-associated transmission of MRSA.  The ICUs and other high-risk units perform MRSA nasal surveillance cultures upon patient admission to the unit and weekly thereafter.  Healthcare-associated transmission of MRSA is defined as definite if the unit admission culture is negative and a subsequent clinical or surveillance culture grows MRSA >48 hours after unit admission.  Healthcare-associated transmission is defined as possible, but not definite, if there an admission surveillance culture is not performed and a subsequent clinical or surveillance culture grows MRSA >48 hours after unit admission.    MRSA healthcare-associated transmission rates are expressed as the number of MRSA transmissions per 1000 patient days.  Our MRSA transmission prevention program includes hand hygiene promotion, surveillance cultures on high-risk units, isolation precautions, environmental cleaning and disinfection, and programs to promote, monitor and sustain evidence-based best practices for MDRO prevention. 

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