The Public Health Agency of Sweden is investigating an outbreak of twelve cases of Salmonella Enteritidis that have been diagnosed in ten different regions of the nations.  The first case was reported in December 2020 with a subsequent wave in late January 2021. 

Whole genome sequencing has demonstrated commonality of the isolates from patients but the source is unknown.  The sequences of the current isolates are different to those obtained from patients that contracted SE from consuming chicken imported from Poland in 2019 and 2020.  Since eight of the twelve cases are under the age of 10, it is presumed that infection occurred within Sweden and was not acquired beyond the Nation’s borders.