We report a patient with clinically significant vaginal posthysterectomy infection due to Bacteroides thetaiotaomicron. The microorganism isolated from the vaginal cuff abscess was beta-lactamase producer and the antibiotic susceptibility pattern showed its resistance to piperacillin-tazobactam and cefoxitin, while the susceptibility to amoxicillin associated with clavulanic acid, metronidazole, and the newer fluoroquinolone moxifloxacin was confirmed.
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