| occurrence of qnra-positive clinical isolates in french teaching hospitals during 2002-2005. | bacteria harbouring the novel qnra plasmid-mediated mechanism of quinolone resistance have been described in different countries, but the frequency of their occurrence has not been investigated. in total, 1,468 clinical isolates of enterobacteriaceae with quinolone resistance or extended-spectrum beta-lactamase (esbl) phenotypes were collected from eight teaching hospitals in france during 2002-2005 and screened for qnra. overall, 28 isolates (22 enterobacter cloacae, three klebsiella pneumoniae ... | 2006 | 16961639 |