Changes in qnr Prevalence and Fluoroquinolone Resistance in Clinical Isolates of Klebsiella pneumoniae and Enterobacter spp. Collected from 1990 to 2005

Changes in qnr Prevalence and Fluoroquinolone Resistance in Clinical Isolates of Klebsiella pneumoniae and Enterobacter spp. Collected from 1990 to 2005 Presence of Plasmid-Mediated Quinolone Resistance in Klebsiella pneumoniae Isolates Possessing bla _KPC in the United States Emergence of Plasmid-Mediated Quinolone Resistance among Non-Typhi Salmonella enterica Isolates from Humans in the United States Plasmid-Mediated qnrB2 and Carbapenemase Gene bla _KPC-2 Carried on the Same Plasmid in Carbapenem-Resistant Ciprofloxacin-Susceptible Enterobacter cloacae Isolates Association of QnrB Determinants and Production of Extended-Spectrum β-Lactamases or Plasmid-Mediated AmpC β-Lactamases in Clinical Isolates of Klebsiella pneumoniae Emergence of the Quinolone Resistance-Mediating Gene aac(6′)-Ib-cr in Extended-Spectrum-β-Lactamase-Producing Klebsiella Isolates Collected in Slovenia between 2000 and 2005 New Plasmid-Mediated Quinolone Resistance Gene, qnrC , Found in a Clinical Isolate of Proteus mirabilis High Prevalence of qnr Genes in Commensal Enterobacteria from Healthy Children in Peru and Bolivia Emergence of the Plasmid-Mediated Quinolone Resistance Gene qnrS1 in Escherichia coli Isolates in Greece High Prevalence of Plasmid-Mediated Quinolone Resistance Genes qnr and aac(6′)-Ib-cr in Clinical Isolates of Enterobacteriaceae from Nine Teaching Hospitals in China