| epidemiology of conjugative plasmid-mediated ampc beta-lactamases in the united states. | a sample of 752 resistant klebsiella pneumoniae, klebsiella oxytoca, and escherichia coli strains from 70 sites in 25 u.s. states and the district of columbia was examined for transmissibility of resistance to ceftazidime and the nature of the plasmid-mediated beta-lactamase involved. fifty-nine percent of the k. pneumoniae, 24% of the k. oxytoca, and 44% of the e. coli isolates transferred resistance to ceftazidime. plasmids encoding ampc-type beta-lactamase were found in 8.5% of the k. pneumon ... | 2004 | 14742206 |
| antimicrobial susceptibility of extended-spectrum beta-lactamase producers and multidrug-resistant acinetobacter baumannii throughout the united states and comparative in vitro activity of tigecycline, a new glycylcycline antimicrobial. | as part of the tigecycline evaluation and surveillance trial, isolates of escherichia coli, klebsiella pneumoniae, and acinetobacter baumannii were collected in the united states between january 2004 and january 2006. determinations of antimicrobial susceptibility and extended-spectrum beta-lactamase (esbl) production were carried out according to the clinical and laboratory standards institute guidelines. a high percentage of esbl-producing k. pneumoniae (>or=19.0%) was detected in new jersey, ... | 2007 | 17403448 |
| molecular and descriptive epidemiologyof multidrug-resistant enterobacteriaceae in hospitalized infants. | to investigate the epidemiology of multidrug-resistant enterobacteriaceae (mdre) in hospitalized infants. | 2008 | 18251685 |