Title : [Expanded-spectrum beta-lactamase-producing strains of E. coli: origin, characteristics and incidence in Southern Alicante (Spain) in the period 1999-2003].

Pub. Date : 2005 Feb

PMID : 15743578






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1 INTRODUCTION: In the last years, we have verified the increasing emergence of bacteria, specially Escherichia coli, that produce expanded spectrum beta-lactamases (ESBL), enzymes which confer resistance to all cephalosporins (except cephamycins) and aztreonam. Aztreonam EsbL Escherichia coli