Complex Class 1 Integrons with Diverse Variable Regions Including aac(6′)-Ib-cr and a Novel Allele qnrB10 Associated with ISCR1 in Clinical Enterobacterial Isolates from Argentina

摘要

Transferable quinolone resistance has not previously been reported in Argentina. Here we describe three complex class 1 integrons harboring the novel allele qnrB10 in a unique region downstream of orf513, one of them also containing aac(6′)-Ib-cr within the variable region of integrons. The three arrays differed from blaCTX-M-2-bearing integrons, which are broadly distributed in Argentina.