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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Extended spectrum beta lactamases (ESBLs) are characterized by activity against all except:
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The correct answer is  CARBAPENEMS: lmipenem :It is an extremely potent and broad-spectrum Beta-lactam antibiotic whose range of activity includes grampositive cocci, Enterobacteriaceae, Ps. aeruginosa, Listeri.