A fusion plasmid harboring blaCTXM-15 and qnrB2 isolated from a clinical Escherichia coli: the multiresistant outcome of multiple complex genomic rearrangements between two conjugative plasmids Navegación de entradas The role of interspecies recombination in the evolution of antibiotic-resistant pneumococci Novel complex class 1 integron carrying qnrB10 and blaCTX-M-2 in a twin variable region 2 found in a clinical Citrobacter freundii from Argentina.