Escherichia coli, Extended-spectrum Beta-lactamase Positive

**Semantic type:** Bacterium

**Definition:** Any strain of Escherichia coli that is resistant to penicillins, cephalosporins, and aztreonam. These strains are often cross-resistant to trimethoprim/sulfamethoxazole and quinolones.

**Synonyms:** - ESCHERICHIA COLI, ESBL - Escherichia coli, Extended-spectrum Beta-lactamases