An Outbreak of Multidrug-Resistant, Quinolone-Resistant<i>Salmonella enterica</i>Serotype Typhimurium DT104

Abstract

Our investigation of an outbreak of DT104 documented the spread of quinolone-resistant bacteria from food animals to humans; this spread was associated with infections that were difficult to treat. Because of the increase in quinolone resistance in salmonella, the use of fluoroquinolones in food animals should be restricted.