Table 1. Features of the CPE strains and their carbapenemase-carrying plasmids.

				PCR detection of antimicrobial resistance genes						Characterization of the carbapenemase-carrying plasmids
Isolate	Species	Sampling date	MLST	Carbapenemases			Oxacillinase	Other resistance genes		Plasmid size	Inc groups			PAS			PPS
1-CAR	E. coli	2014/07/08	ST1434	blaKPC-2	—	—	blaOXA-1	aac(6')-Ib-cr	qnrB6	70 kb	IncN	—	—	vagCD	—	—	—
2-CAR	E. coli	2014/07/08	ST5001	blaKPC-2	—	—	—	—	—	48 kb	—	IncR	—	—	—	—	parAB
3-CAR	E. cloacae	2014/05/27	ST822	—	blaIMI-2	—	—	—	—	170 kb	—	—	IncFIB	—	—	—	—
4-CAR	E. coli	2014/07/08	ST216	blaKPC-2	—	—	—	aac(6')-Ib	—	48 kb	—	IncR	—	—	parDE	ccdAB	—
5-CAR	R. ornithinolytica	2014/05/27		—	—	blaVIM-1	blaOXA-1	aac(6')-Ib	qnrB5	70 kb	—	IncR	—	vagCD	—	—	—
6-CAR	K. pneumoniae	2014/05/27	ST634	blaKPC-2	—	—	—	—	—	97 kb	—	—	IncFIIK	vagCD	—	—	—
7-CAR	E. cloacae	2014/07/08	ST823	blaKPC-2	—	—	blaOXA-1	aac(6')-Ib-cr	qnrB6	70 kb	IncN	—	—	vagCD	—	—	—
8-CAR	K. oxytoca	2014/05/27		blaKPC-2	—	blaVIM-1	blaOXA-1	aac(6')-Iba	—	60 kb	IncN	—	—	—	—	—	parAB

^a, This strain was positive for the presence of the aac(6')-Ib gene although it was detected in a different plasmid of circa 240 kb.