| 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 |