| epidemiology and molecular characterization of extended-spectrum beta-lactamase-producing enterobacter spp., pantoea agglomerans, and serratia marcescens isolates from a bulgarian hospital. | forty-two extended-spectrum beta-lactamase (esbl)-producing isolates of enterobacter aerogenes, enterobacter cloacae, pantoea agglomerans, and serratia marcescens, collected consecutively during the period january-november 2011 from the university hospital in varna, bulgaria, were studied to characterize their esbls by isoelectric focusing, group-specific pcr, and sequencing. the epidemiological relationship was evaluated by random amplified polymorphic dna analysis (rapd). transferability of es ... | 2014 | 24171449 |