Table 1. Main characteristics of cases of bloodstream infection due to carbapenemase-producing Enterobacteriaceae reported to the national surveillance system, Italy, 2014–2017 (n = 7,632).

Characteristics		N	%
Pathogen	Klebsiella pneumoniae	7,490	98.1
Pathogen	Escherichia coli	142	1.9
Sex^a	Female	2,817	37.3
Sex^a	Male	4,731	62.7
Age group (years)^a	0–19	101	1.4
	20–39	411	5.6
	40–59	1,642	22.2
	60–79	3,677	49.7
	≥ 80	1,569	21.2
Nationality	Italian	7,631	96.4
Nationality	Other	271	3.6
Patient location at symptom onset^a	Hospital	6,386	87.2
Patient location at symptom onset^a	Other^b	937	12.8
Total		7,632	100

IR: incidence rate.

^aFor 84 (1.1%) cases, sex was not indicated; for 232 (3.0%) cases, age was not reported; for 309 (4.0%) cases, patient location was not indicated.

^bHome or long-term care facility.