What is listeriosis?

Listeriosis is a bacterial infection caused by the bacterium Listeria monocytogenes. It is particularly concerning because it can lead to severe illness in certain vulnerable populations, including pregnant women, newborns, older adults, and individuals with compromised immune systems. The severity of listeriosis can result in complications such as meningitis, septicemia, or even miscarriage in pregnant women.

The infection is often linked to the consumption of contaminated foods, including unpasteurized dairy products, deli meats, and ready-to-eat foods. Recognizing listeriosis as predominantly a bacterial illness rather than a viral or fungal one highlights its origins and the specific risk factors associated with it. This understanding is crucial for effective food safety practices and public health education aimed at preventing outbreaks.

The other options misrepresent the nature and causes of listeriosis, emphasizing different types of infections that do not involve Listeria monocytogenes.