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MIC distribution of isolates with blaTEM-1, a blaCMY-2-like gene, blaTEM-1 plus a blaCMY-2-like gene, or a blaDHA gene. (A) CTX ECOFF, ≤0.25 mg/liter; susceptible [S], ≤1 mg/liter; resistant [R], >2 mg/liter. (B) ETP ECOFF, ≤0.064 mg/liter; S, ≤0.5 mg/liter; R, >1 mg/liter. In parentheses is the number of isolates tested. Black rectangles, isolates analyzed for mutations in OmpC/K36.
