Listeria Outbreak in 2024: Deli Meats Under Scrutiny

In 2024, the United States has seen a concerning rise in Listeria monocytogenes infections, primarily linked to deli meats. This outbreak has spanned multiple states, with New York reporting the highest number of cases. As of July 19, 2024, a total of 28 individuals have been infected, leading to 28 hospitalizations and two fatalities​.

Source of Infection

The CDC has identified deli meats sliced at deli counters as the primary source of this outbreak. Interviews with affected individuals revealed that 89% had consumed deli meats before falling ill. Notably, there is no evidence linking prepackaged deli meats to the outbreak, suggesting that contamination likely occurred at the point of slicing.

Affected Populations

Listeria infections can be particularly severe for certain groups. Pregnant women, older adults, and individuals with weakened immune systems are at higher risk. Pregnant women may experience mild flu-like symptoms, but the infection can result in miscarriage, stillbirth, or severe infection in newborns. Non-pregnant individuals may suffer from more severe symptoms such as headaches, stiff neck, confusion, loss of balance, and convulsions​.

Recommendations for Prevention

The CDC advises high-risk individuals to avoid consuming deli meats unless they are thoroughly heated to an internal temperature of 165°F. It is also crucial to maintain cleanliness in refrigerators and on surfaces that come into contact with deli meats. Businesses are urged to follow USDA-FSIS best practices for controlling Listeria contamination in deli areas​.

Public Health Response

The CDC and other public health agencies are actively investigating the outbreak to identify the specific sources of contamination and to prevent further cases. Detailed information about the outbreak, including maps of affected areas and investigation updates, can be found on the CDC’s Listeria outbreak page​.

This outbreak underscores the importance of food safety practices, particularly in handling and consuming deli meats. Public health authorities continue to monitor the situation and provide updates to ensure public safety.