Listeria monocytogenes is a bacteria that is known for causing illnesses such as listeriosis. This bacteria is a foodborne pathogen that can be found in a wide range of foods such as raw meats, raw dairy products, and even some fruits and vegetables. Other common synonyms for Listeria monocytogenes include L. monocytogenes, monocytogenes, and the term listeria. It's important to note that these different terms all refer to the same bacteria, and that only thorough cooking or pasteurization can effectively kill it. Proper food handling techniques and avoiding high-risk foods can help reduce the risk of listeria infections.