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Comment & Response
May 2014

Identifying Livestock-Associated Methicillin-Resistant Staphylococcus aureus in the United States

Author Affiliations
  • 1Carver College of Medicine, University of Iowa, Iowa City
  • 2Microbiology and Infection Control, Statens Serum Institut, Copenhagen, Denmark
  • 3Laboratory for Microbiology and Infection Control, Amphia Hospital, Breda, the Netherlands
JAMA Intern Med. 2014;174(5):824-825. doi:10.1001/jamainternmed.2014.45

To the Editor Livestock density in the Netherlands has been identified as a risk factor for livestock-associated methicillin-resistant Staphylococcus aureus (MRSA) in individuals not engaged in livestock production.1 Thus, we read with interest the report by Casey et al2 that identified proximity to swine manure application to crop fields as a risk factor for MRSA infection and skin and soft-tissue infection. While the analysis appears sound, we have questions concerning how infections were identified in the study and the specific strains identified.

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