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Multidrug-resistant Salmonella typhimurium, Pacific Northwest, United States

Davis, Margaret A.
Besser, Thomas E.
Eckmann, Kaye
MacDonald, J. Kathryn
Green, Donna
Hancock, Dale D.
Baker, Katherine N. K.
Warnick, Lorin D.
Soyer, Yeşim
Wiedmann, Martin
Call, Douglas R.
We compared human and bovine isolates of Salmonella enterica using antimicrobial-drug resistance profiles and pulsed-field gel electrophoresis. From 2000 through 2006, we observed an increase in a novel multidrug-resistant clone of S. Typhimurium with no recognized phage type. This clone may represent an emerging epidemic strain in the Pacific Northwest.