Foodborne disease remain an important public health challenge and they are an important cause of morbidity and mortality worldwide.
During 2009 – 2014 Slovenia reported 389 different outbreaks. The largest group represents the outbreaks with contact transmission (210) where the most common etiologic agent was norovirus, followed by the foodborne disease outbreaks (38). In 2014 the all foodborne disease outbreaks were caused by Salmonella Enteritidis. The outbreaks occurred in the restaurants, in primary school in home setting, the participants of the trip.
All outbreaks of foodborne  disease except  one, fall into the category, were the strenght of evidence for epidemiological and microbiological evidence was weak. The epidemiological evidence (descriptive and analytical)  and microbiological evidence (an indistinguishable causative agent is identified in an outbreak cases and from a foodstuff of a type eaten by a case) was weak.

Only in one outbreak the epidemiological and microbiological  category  of evidence was strong. Comparison of Salmonella isolates with PFGE method and MLVA in humans and isolates from poultry flocks, which was owned by the catering facility where the outbreak occurred, showed the same pulsotype and identical type of MLVA.

Due to the increased number of  foodborne disease outbreaks in 2014 caused by salmonella, the human isolates from six foodborne disease outbreaks were analysed  by MLVA method. The human isolates originated from  5 of 6 outbreaks had the same MLVA type. The results supported the probability that  food vehicles  in 5 of 6 outbreaks were from the same origin, but the foodstuffs  were not implicated.