Fig. 1From: Occurrence of Salmonella Typhimurium and its monophasic variant (4, [5],12:i:-) in healthy and clinically ill pigs in northern ItalyDistribution of the isolates (percentages on the total of positive samples) of Salmonella Typhimurium (ST) and its monophasic variant (MST), during the period of the study (2002–2017)Back to article page