Genetic Environment of Quinolone Resistance Gene qnrB2 in a Complex sul1-Type Integron in the Newly Described Salmonella enterica Serovar Keurmassar

A qnrB2 determinant was described for a new complex sul1-type integron from Salmonella enterica serovar Keurmassar. The genetic structure contained two class 1 integrons surrounding two common regions (CRs) separated by a partial 3′ conserved segment. The qnrB2 gene is adjacent to the first CR.