Phenotypic antimicrobial resistance in Escherichia coli strains isolated from swine husbandries in North Western Germany – temporal patterns in samples from laboratory practice from 2006 to 2017

Table 7 Temporal development in AMR for spectinomycin

	Number of isolates with MIC values (mg/ml) of…									S		I		R
	4	16	32	64	128	256	n	MIC₅₀	MIC₉₀	n	%	n	%	n	%
Year
2006	17	94	52	40	32	75	310	32.00	256.00	163	52.58	40	12.90	107	34.52
2007	2	106	87	54	41	91	381	32.00	256.00	195	51.18	54	14.17	132	34.65
2008	3	105	51	39	32	79	309	32.00	256.00	159	51.46	39	12.62	111	35.92
2009	1	81	65	29	25	69	270	32.00	256.00	147	54.44	29	10.74	94	34.81
2010	.	79	66	37	20	68	270	32.00	256.00	145	53.70	37	13.70	88	32.59
2011	4	97	53	26	41	45	266	32.00	256.00	154	57.89	26	9.77	86	32.33
2012	3	80	66	43	26	43	261	32.00	256.00	149	57.09	43	16.48	69	26.44
2013	3	120	57	33	32	51	296	32.00	256.00	180	60.81	33	11.15	83	28.04
2014	3	93	47	17	18	28	206	32.00	256.00	143	69.42	17	8.25	46	22.33
2015	12	71	47	21	10	33	194	32.00	256.00	130	67.01	21	10.82	43	22.16
2016	5	72	35	16	15	24	167	32.00	256.00	112	67.07	16	9.58	39	23.35
2017	.	52	31	13	24	4	124	32.00	128.00	83	66.94	13	10.48	28	22.58
Total	53	1050	657	368	316	610	3054	32.00	256.00	1760	57.63	368	12.05	926	30.32

ISSN: 1746-6148