What Is Listeria?

Listeria monocytogenes is a type of bacterium that can cause listeriosis, a serious infection. While healthy individuals might only experience mild symptoms such as fever, nausea, and diarrhea, listeriosis can be particularly dangerous for pregnant women, newborns, the elderly, and individuals with weakened immune systems. In severe cases, it can lead to miscarriages, stillbirths, and even death.

Source: https://support.google.com/assistant/thread/304336469?hl=en&sjid=4991855676199607410-AP