Table 1.

Primers used in this study

Primer	Sequence (5' to 3')	Target	Reference
Integrons
5'-CS 3'-CS	GGCATCCAAGCAGCAAG AAGCAGACTTGACCTGA	Class 1 integron	11
hep74 hep51	CGGGATCCCGGACGGCATGCACGATTTGTA GATGCCATCGCAAGTACGAG	Class 2 integron	11
β-Lactamases
TEM-F TEM-R	ATAAAATTCTTGAAGACGAAA GACAGTTACCAATGCTTAATC	blaTEM	11
SHV-F SHV-R	TT ATCTCCCTGTTAGCCACC GATTTGCTGATTTCGCTCGG	blaSHV	11
OXA-F OXA-R	TCAACTTTCAAGATCGCA GTGTGTTTAGAATGGTGA	blaOXA	11
CTX-M-F CTX-M-R	CGCTTTGCGATGTGCAG ACCGCGATATCGTTGGT	blaCTX-M	11
CTX-M-F2 CTX-M-R2	CCAGAATAAGGAATCCCATG GCCGTCTAAGGCGATAAAC	whole blaCTX-M	11
CMY-F CMY-R	GACAGCCTCTTTCTCCACA TGGAACGAAGGCTACGTA	blaCMY	11
Plasmid-mediated quiniolone resistance
qnrA-F qnrA-R	ATTTCTCACGCCAGGATTTG GATCGGCAAAGGTTAGGTCA	qnrA	19
qnrB-F qnrB-R	GATCGTGAAAGCCAGAAAGG ACGATGCCTGGTAGTTGTCC	qnrB	19
qnrS-F qnrS-R	ACGACATTCGTCAACTGCAA TAAATTGGCACCCTGTAGGC	qnrS	19