As of November 30, 2020, a total of 11 people infected with the outbreak strain of Listeria monocytogenes have been reported from three states.

Listeria samples from ill people were collected from August 6, 2020, to October 30, 2020. Ill people range in age from 40 to 89 years, with a median age of 84 years, and 82% are female. All 11 ill people were hospitalized. One death has been reported from Florida.

Epidemiologic evidence shows that deli meat is a likely source of this outbreak.

State and local public health officials interviewed ill people about the foods they ate in the month before they became ill. Of the 10 people interviewed, all reported eating Italian-style deli meats, such as salami, mortadella, and prosciutto. They reported purchasing prepackaged deli meats and meats sliced at deli counters at various locations.

Investigators are working to identify a specific type of deli meat or a common supplier linked to the illnesses.

Deli meats can have Listeria bacteria. Even when there are no ongoing outbreaks, people who are at higher risk of getting sick from Listeria should avoid eating deli meats, unless heated to an internal temperature of 165°F or until steaming hot just before serving.