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Methicillin-resistant Staphylococcus aureus (MRSA) infections in intensive care nurseries (ICNs) are becoming increasingly common. How the organisms enter the ICN and whether the strains are of community origin (CA-MRSA) or healthcare-associated (HA-MRSA) are unclear. To explore these issues, investigators assembled 14 years of data on MRSA strains in one Atlanta ICN.
In January 1993, hospital officials instituted an infection-control protocol targeting MRSA in the ICN: The isolation of MRSA in the clinical cultures of an ICN patient triggered weekly culture surveillance of all infants in the ICN until 4 weeks after discharge of the last infant known to be MRSA-infected or -colonized. Contact precautions were instituted for MRSA-positive inf…