7 Common Symptoms of a Listeria Infection

If you’re concerned about a recent recall and think you might have listeriosis, check your symptoms here.

7 Common Symptoms of a Listeria Infection

By Toni Gasparis

Listeriosis is a foodborne illness caused by consumption of foods contaminated with the listeria monocytogenes bacterium. Various produce, dairy, uncooked meats, and packaged produce can carry the listeria bacteria which can cause digestive problems, severe illness, and even death. Older adults, pregnant women, newborns, and adults with a weakened immune system are the most at-risk populations. Symptoms of listeria can develop anywhere from three days to three months after ingesting the contaminated food. If you’re experiencing any of the symptoms, it’s important that you contact your doctor immediately for diagnosis and treatment options.


Listeria bacteria’s primary effects are in the digestive tract because it is present in contaminated foods. Therefore, it can disrupt the normal processes of digestion, which can result in diarrhea. While not all people experience it, excessive diarrhea is usually one of the first symptoms of listeria. If you are spending an abnormal amount of time in the bathroom and are continuously passing loose stool, or are concerned about your bowel movements, call your doctor for a consultation.

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