In Reply We appreciate the opportunity to respond to Perencevich et al. We emphasize several differences between our work and that of Feingold and colleagues, to which they refer in their letter. We studied methicillin-resistant Staphylococus aureus (MRSA) infection in a general population representative group and compared them with patients without MRSA infection. Feingold et al studied MRSA colonization and compared people with ST398 with people with other strains. The inferences that can be made from these 2 studies are substantially different.
Casey JA, Schwartz BS. Identifying Livestock-Associated Methicillin-Resistant Staphylococus Aureus in the United States—Reply. JAMA Intern Med. 2014;174(5):825. doi:10.1001/jamainternmed.2014.37
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