Which foods are most commonly associated with listeriosis?

Listeriosis is a serious infection caused by the bacterium Listeria monocytogenes, which can lead to severe illness, particularly in vulnerable populations such as pregnant women, newborns, the elderly, and those with weakened immune systems. The foods most commonly associated with listeriosis are deli meats and unpasteurized dairy products.

Deli meats can be contaminated during processing and handling, and because they are often consumed without further cooking, any Listeria present can lead to infection. Unpasteurized dairy products, such as certain cheeses and raw milk, can also harbor Listeria due to the lack of heat treatment that would typically kill harmful bacteria. These foods are significant concerns for public health because they can support the growth of Listeria throughout their shelf life, especially when stored improperly.

Understanding the specific risks associated with these foods is essential for implementing effective food safety practices to prevent listeriosis. This knowledge helps in guiding consumers on safe food handling, storage, and preparation methods, particularly for those who are at higher risk for listeriosis.