[Appearance of Escherichia coli strain with high production of cephalosporinase during treatment with an amoxicillin and clavulanic acid combination].

Abstract excerpt

In the course of an Escherichia coli cholecystitis, demonstrated by positive blood cultures, the authors observed a therapeutic failure with amoxicillin/clavulanate, probably related to the isolation in blood cultures, nine days after the beginning of the treatment, of a beta-lactam resistant E. coli strain (MICs of the amoxicillin combined with clavulanate was 64 mg/l and ceftazidim 16 mg/l). The strains which...

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