As of December 17, 2019, a total of seven people infected with the outbreak strain of Listeria monocytogenes have been reported from five states. In interviews, ill people answered questions about the foods they ate and other exposures in the month before they became ill. Of the five people for whom information was available, four reported eating products containing eggs. Three of these people reported eating hard-boiled eggs in deli salads purchased from grocery stores and in salads eaten at restaurants. Illnesses started on dates ranging from April 10, 2017 to November 12, 2019.
Additionally, based on whole-genome sequencing, the Listeria monocytogenes found in environmental samples collected at the firm’s processing facility during an FDA inspection conducted in February 2019 is a genetic match to the outbreak strain. FDA is conducting additional inspections and sampling. Almark Foods has been cooperating with the ongoing investigation and announced a voluntary recall of hard-boiled and peeled eggs in pails on December 20, 2019.
This outbreak strain was found during environmental sampling in 2017 of one other food facility. That facility is not currently handling food and ceased operation in 2018.