EFSA and the European Centre for Disease Prevention and Control (ECDC) used whole genome sequencing to identify the multi-country outbreak.
By 8 October 2018, 12 cases including four deaths were reported in the affected countries.
See also: Listeria contamination of ready-to-eat foods and the risk for human healthIn August 2017, Denmark reported the first cluster of cases linked to the consumption of ready-to-eat smoked salmon produced in Poland. Control measures were implemented and other EU Member States and competent authorities were informed.
In October 2017 France reported the detection of the same strain of Listeria in marinated salmon originating from the same Polish processing company as identified in the Danish outbreak investigation. The most recent case linked to the outbreak was notified in Germany in May 2018.