Emergence of Multidrug‐Resistant Salmonella enterica Serotype Newport in Minnesota
Departments of 1Veterinary and Biomedical Sciences and 2Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, Saint Paul, 3Minnesota Department of Health, Minneapolis, and 4Minnesota Board of Animal Health, Minnesota Poultry Testing Laboratory, Willmar, Minnesota
We report a concurrent increase in the number of isolates of Salmonella enterica serotype Newport and the rate of multidrug resistance in S. Newport isolates from animal and human populations in Minnesota. Antimicrobial susceptibility and pulsed‐field gel electrophoresis analysis demonstrated heterogeneity of isolates and showed that 1 pulsed‐field gel electrophoresis cluster contained most of the multidrug‐resistant isolates with a resistance pattern and most class 1 integron isolates, implying the clonal origin of the isolates.
Received 30 December 2005; accepted 4 April 2006; electronically published 6 June 2006.
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Online publication date: 1-Jun-2009.
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Online publication date: 1-Oct-2008.
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