TABLE 1.

Genetic context and location of the main ESBL/AmpC genes detected.

ESBL/AmpC genes	Flanking elements	Plasmid mediated	Chromosome	Plasmid replicons	Selected co-occurring genes
blaCTX–M–55 (n = 40)	ISEcp1 and orf477	33	7	IncF, IncX, IncH, IncN, IncR and IncP	mcr-1, mcr-3, qnrS1, blaOXA–10, blaTEM–1B, blaLAP–2, aadA1, floR, sul2, tet(A), dfrA14
blaCTX–M–27 (n = 36)	ISEcp1 and IS903B	36	0	IncF	blaTEM–1B, blaLAP–2, qnrS1, aadA5, aph(3″)-Ib, aph(6)-Id, mph(A), sul1/2, tet(A), dfrA14, dfrA17
blaCTX–M–14 (n = 15)	ISEcp1 and IS903B	6	9	IncB/O/K/Z, IncFIB, and IncX4	blaTEM–1B, blaLAP–2, mcr-1, qnrS1, aac(3)-Iid, cmlA, floR, tet(M), dfrA12
blaCTX–M–15 (n = 10)	ISEcp1 and orf477	9	1	IncB/O/K/Z, IncFII, IncI1	blaTEM–1B, qnrS1
blaCTX–M–65 (n = 5)	ISEcp1 and IS903B	5	0	IncF	blaTEM-1B, aph(3″)-Ib, aph(6)-Id, sul2
blaCMY–2 (n = 7)	ISEcp1 and variable	2	5	IncF	blaCTX–M–27, mph(A), aadA5, sul1, dfrA17
blaCMY–42 (n = 1)	ISEcp1 and HP	1	0	IncI1
blaDHA–1 (n = 2)	IS3E and HP	2	0	IncF	blaCTX–M–27, qnrB4, mph(A), sul1, dfrA17