Prevalence and Risk Factors for Selection of Quinolone-Resistant Escherichia coli Strains in Fecal Flora of Patients Receiving Quinolone Therapy

Prevalence and Risk Factors for Selection of Quinolone-Resistant Escherichia coli Strains in Fecal Flora of Patients Receiving Quinolone Therapy Changes in qnr Prevalence and Fluoroquinolone Resistance in Clinical Isolates of Klebsiella pneumoniae and Enterobacter spp. Collected from 1990 to 2005 In Vitro Effect of qnrA1 , qnrB1 , and qnrS1 Genes on Fluoroquinolone Activity against Isogenic Escherichia coli Isolates with Mutations in gyrA and parC Quinolone Resistance in Helicobacter pylori Isolates in Germany Mutant Prevention Concentrations of Fluoroquinolones for Enterobacteriaceae Expressing the Plasmid-Carried Quinolone Resistance Determinant qnrA1 Prevalence and Dissemination of oqxAB in Escherichia coli Isolates from Animals, Farmworkers, and the Environment Emergence of Plasmid-Mediated Quinolone Resistance among Non-Typhi Salmonella enterica Isolates from Humans in the United States Effects of Carbapenem Exposure on the Risk for Digestive Tract Carriage of Intensive Care Unit-Endemic Carbapenem-Resistant Pseudomonas aeruginosa Strains in Critically Ill Patients First Report of Plasmid-Mediated Quinolone Resistance Determinant qnrS1 in an Escherichia coli Strain of Animal Origin in Italy Interspecies Recombination Occurs Frequently in Quinolone Resistance-Determining Regions of Clinical Isolates of Streptococcus pyogenes