clonal transmission of gram-negative bacteria with carbapenemases ndm-1, vim-1, and oxa-23/72 in a bulgarian hospital.we characterized 72 isolates with reduced susceptibility to carbapenems (50 acinetobacter spp., 13 proteus mirabilis, five escherichia coli, one morganella morganii, one enterobacter cloacae, one providencia rettgeri, and one pseudomonas aeruginosa) from a hospital in sofia, bulgaria. different β-lactamase genes were identified by polymerase chain reaction and sequencing. bacterial strain typing was performed by enzymatic macrorestriction and pulsed-field gel electrophoresis (pfge) typing as wel ...201727459019
dissemination of a multidrug-resistant vim-1- and cmy-99-producing proteus mirabilis clone in bulgaria.the aim of this study was to analyze the beta-lactamases and the molecular epidemiology of 19 clinically significant isolates of proteus mirabilis with decreased susceptibility to imipenem, which have been collected from seven hospitals, located in different bulgarian towns (sofia, varna, and pleven). the isolates were obtained from blood, urine, tracheal and wound specimens. one additional isolate from hospital environment was included. susceptibility testing, conjugation experiments, and plasm ...201727341161
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