| occurrence of extended-spectrum beta-lactamases in enterobacteriaceae isolated from hospitalized patients in curitiba, southern brazil. | production of extended-spectrum beta-lactamases (esbl) by enterobacteria is an important resistance mechanism against antimicrobial beta-lactamics. we tested 498 bacterial strains isolated from two tertiary-care teaching hospitals for esbl production, using screening breakpoints for aztreonam and third generation cephalosporins, according to clsi recommendations. among these isolates, 155 were positive for the esbl screening test, and 121 (78%) were confirmed by the clavulanic acid combination d ... | 2006 | 17420911 |
| molecular epidemiology of klebsiella pneumoniae carbapenemase-producing enterobacteriaceae in different facilities in southern brazil. | klebsiella pneumoniae carbapenemase-producing k pneumoniae (kpc-kp) outbreaks have been reported in many countries, including brazil. the incidence of kpc-kp infection has increased in the first semester of 2011 in curitiba, the capital of parana, in southern brazil.the aim of this study was to characterize the infections and clonal diversity of kpc-kp isolates from several institutions in curitiba. | 2015 | 25541337 |
| occurrence and antibiotic resistance of coliform bacteria and antimicrobial residues in pasteurized cow's milk from brazil. | in this study we examined the hygienic and sanitary quality of pasteurized cow's milk in the state of paraná, brazil, by determining the presence of coliforms and occurrence of antimicrobial residues. a total of 260 milk samples were collected from commercial establishments in different regions of the state. coliform populations were estimated by the multiple-tube test, and antimicrobial residues were detected by enzyme-linked immunosorbent assay. overall, 105 samples (40.4%) were unsuitable for ... | 2010 | 20828476 |