The Swedish Public Health Agency, or Folkhälsomyndigheten reports an increase in cases of Yersinia infections since the second week of January, according to a February 3 release.
They say more than twice as many people have contracted Yersinia infection as during the same period in the immediately preceding years.
An increased number of patients has mainly been observed in the regions of Stockholm, Västra Götaland and Halland, which together account for 33 of the total of 48 disease cases reported since 11 January.
