Listeriosis causes

Overview
According to the U.S. Centers for Disease Control and Prevention, listeriosis is an important public health problem in the United States.The bacteria (L. monocytogenes) that cause this disease are common in wild animals, domesticated animals, and in soil and water. The bacteria make many animals sick and commonly lead to miscarriage and stillbirth in domestic animals.

Causes
The Center for Science in the Public Interest has published a list of foods that have sometimes caused outbreaks of Listeria: hot dogs, deli meats, raw milk, cheeses (particularly soft-ripened cheeses like feta, Brie, Camembert, blue-veined, or Mexican-style “queso blanco”), raw and cooked poultry, raw meats, ice cream, raw vegetables, raw and smoked fish.