A recent publication in Eurosurveillance* documented a recent outbreak of Salmonella Enteritidis involving 65 cases of which 25 were confirmed and 18 regarded as probable, linked to a specific restaurant in addition to 22 other cases.
A case-controlled study was conducted following administration of a menu-based questionnaire. Odds ratios were high for consuming any dish containing eggs with an indication of possible infection from chicken served by the restaurant.
Detailed and state-of-the-art molecular characterization was performed on the isolates from patients confirming a common source.
The report concluded that based on epidemiological and food chain investigations and supported by genome sequence assays that eggs imported from Poland were the likely source of the outbreak.
*Benson, H. E. et al. Local Salmonella Enteritidis Restaurant Outbreak Investigation in England Provides Further Evidence for Eggs as a Source in Widespread International Cluster, March to April 2023. Eurosurveillance 28:1-5. July 6th 2023.