Amplicon Primers Sequence (5'–3') Size (bp) QnrA qnrA-A qnrA-B ATTTCTCACGCCAGGATTTG GATCGGCAAAGGTTAGGTCA 516 QnrB qnrB-A qnrB-B GATCGTGAAAGCCAGAAAGG ACGATGCCTGGTAGTTGTCC 469 QnrS qnrS-A qnrS-B ACGACATTCGTCAACTGCAA TAAATTGGCACCCTGTAGGC 417

Table 1: Sequences of primers used for multiplex PCR