Occurrence of Salmonella Typhimurium and its monophasic variant (4, [5],12:i:-) in healthy and clinically ill pigs in northern Italy

Table 1 Number of MST and ST isolates and related percentages on the total of positive samples

Year	Total positive samples	ST		MST		ST + MST
Year	Total positive samples	n	%	n	%	n	%
2002	108	38	35.19	18	16.67	56	51.85
2003	164	16	9.76	19	11.59	35	21.34
2004	106	24	22.64	11	10.38	35	33.02
2005	72	19	26.39	10	13.89	29	40.28
2006	268	28	10.45	18	6.72	46	17.16
2007	325	18	5.54	18	5.54	36	11.08
2008	262	32	12.21	45	17.18	77	29.39
2009	196	6	3.06	36	18.37	42	21.43
2010	272	6	2.21	21	7.72	27	9.93
2011	416	8	1.92	15	3.61	23	5.53
2012	834	17	2.04	84	10.07	101	12.11
2013	339	10	2.95	57	16.81	67	19.76
2014	145	16	11.03	61	42.07	77	53.10
2015	176	3	1.70	39	22.16	42	23.86
2016	231	5	2.16	28	12.12	33	14.29
2017	69	0	0.00	7	10.14	7	10.14
Total	3983	246	6.18	487	12.23	733	18.40

ISSN: 2055-5660