Fig 1.
MICs of 26 antimicrobial agents for 22 Escherichia coli and 2 Klebsiella pneumoniae isolates containing blaCTX-M recovered from fecal samples from finishing swine in Ohio, Michigan, and Illinois. The MICs (in micrograms per milliliter) are shown at the top of the figure, and the numbers of isolates are shown in the body of the figure. The broken vertical lines represent susceptible breakpoints, and the solid vertical lines represent resistant breakpoints where available. The range of concentrations of each antimicrobial agent included in this study is indicated by the gray blocks.