Swedish health officials (Folkhälsomyndigheten) report investigating (computer translated) an outbreak of Yersinia enterocolitica cases throughout the country since March. Cases have been reported in nearly all regions of the country and affected adults the most.
To date, 26 cases in ten regions have been confirmed in the outbreak. Another thirty cases are being investigated. Health officials say since the current outbreak strain of Y. enterocolitica type O3 has been found in different parts of the country, it is likely that a food borne infection will occur.
The investigation into a foodborne source is ongoing with collaboration of the Public Health Authority, the National Food Administration, municipalities and the County Administrative Board.
Sweden reports between 200 to 300 cases reported annually.
The most common symptoms of Yersinia enterocolitica infection are diarrhea, fever and abdominal pain, usually of 1-3 weeks duration. The reservoir for the bacterium is primarily pig. Dog and cat can also be carriers of the bacterium.
Yersinia bacteria mainly contaminate food, usually via infected pork products, contaminated vegetables or salads, and the use of non-disinfected drinking water.
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