Table 2. Total number of CPE isolates per genus and genotype, Switzerland, 2013–2018 (n = 682).

		Klebsiella spp.		Escherichia coli		Enterobacter spp.		Citrobacter spp.		Proteus spp.		Providencia spp.		Others		Total
IMP	n	1		0		0		0		0		0		0		1
	%	100	< 1	0		0		0		0		0		0		0
KPC	n	153		9		5		1		0		1		2		171
	%	90	40	5	5	3	9	< 1	3	0	0	< 1	14	1	17	25
NDM	n	66		41		21		9		3		5		1		146
	%	45	17	28	22	14	40	6	28	2	33	3	71	< 1	8	21
OXA-181	n	7		17		0		1		0		0		1		26
	%	27	2	65	9	0		4	3	0		0		4	8	4
OXA-48	n	144		113		15		13		0		1		6		292
	%	50	38	39	61	5	28	5	41	0		< 1	14	2	50	43
OXA-other	n	1		1		0		0		0		0		0		2
	%	50	< 1	50	< 1	0		0		0		0		0		0
VIM	n	11		5		12		8		6		0		2		44
	%	25	3	11	3	27	23	18	25	14	67	0		5	17	7
Total	n	383		186		53		32		9		7		12		682
	%	56		27		8		5		1		1		2		100

CPE: carbapenemase-producing Enterobacterales; IMP: Imipenemase; KPC: Klebsiella pneumoniae carbapenemase; NDM: New Delhi metallo-β-lactamase; OXA: Oxacillinase; VIM: Verona integron–encoded metallo-β-lactamase.

Left cell: Percentages relative to total count per row; right cell: Percentages relative to total count per column.

The category ‘others’ includes Pluralibacter spp., Raoultella spp., Salmonella spp., Serratia spp. and unknowns. The category ‘OXA-other’ includes the OXA-232 and OXA-244 genotypes. For a non-aggregated view of species and genotypes, see Supplementary Table S3.