TABLE 1.

Prevalence of carbapenem resistance rates among hospitalized patients with infection due to Enterobacteriaceae, stratified by geographic area (U.S. Centers for Disease Control and Prevention regions), pathogen, and hospital unit, 2011–2014

Geographic division	Hospital unit	Klebsiella spp.		Enterobacter spp.		Escherichia coli		Citrobacter spp.		Serratia spp.
		No. of patients	% with CREa	No. of patients	% with CRE	No. of patients	% with CRE	No. of patients	% with CRE	No. of patients	% with CRE
East North Central	ICUb	1,503	12.18	579	6.04	2,346	0.34	193	2.07	311	1.61
	Non-ICU	1,742	5.97	484	3.72	5,980	0.15	267	1.50	193	4.15
	Total	3,245	8.84	1063	4.99	8,326	0.20	460	1.74	504	2.58
East South Central	ICU	554	3.97	242	4.55	935	1.18	59	5.08	126	2.38
	Non-ICU	701	3.99	254	3.94	2,123	0.19	82	1.22	120	2.50
	Total	1,255	3.98	496	4.23	3,058	0.49	141	2.84	246	2.44
Mid-Atlantic	ICU	1,250	14.96	502	14.34	1,656	1.15	185	3.24	238	4.62
	Non-ICU	1,395	14.48	434	8.53	4,183	0.65	218	0.92	160	1.88
	Total	2,645	14.71	936	11.65	5,839	0.79	403	1.99	398	3.52
Mountain	ICU	114	7.89	37	8.11	186	1.61	10	0.00	18	27.78
	Non-ICU	137	1.46	53	7.55	925	0.54	25	0.00	8	25.00
	Total	251	4.38	90	7.78	1,111	0.72	35	0.00	26	26.92
New England	ICU	312	1.92	161	6.83	568	0.88	66	1.52	109	5.50
	Non-ICU	726	1.24	317	3.15	2,583	0.39	175	1.14	95	3.16
	Total	1,038	1.45	478	4.39	3,151	0.48	241	1.24	204	4.41
Pacific	ICU	1,018	3.54	370	5.14	1,931	0.88	128	2.34	156	8.97
	Non-ICU	1,572	1.84	429	1.86	7,638	0.26	268	0.37	146	8.22
	Total	2,590	2.51	799	3.38	9,569	0.39	396	1.01	302	8.61
South Atlantic	ICU	2,410	4.73	930	8.82	3,412	0.59	263	3.04	411	2.68
	Non-ICU	2,489	2.61	732	4.10	8,701	0.29	357	0.56	302	3.64
	Total	4,899	3.65	1662	6.74	12,113	0.37	620	1.61	713	3.09
West North Central	ICU	679	3.98	259	3.09	1,473	0.27	100	0.00	89	0.00
	Non-ICU	756	2.51	266	1.50	3,106	0.03	129	0.00	81	1.23
	Total	1,435	3.21	525	2.29	4,579	0.11	229	0.00	170	0.59
West South Central	ICU	702	2.56	250	3.20	1,431	0.42	103	2.91	108	4.63
	Non-ICU	1,202	1.41	360	2.50	5,844	0.29	199	3.52	140	2.86
	Total	1,904	1.84	610	2.79	7,275	0.32	302	3.31	248	3.63

^aCRE, carbapenem-resistant Enterobacteriaceae.

^bICU, intensive care unit.