Disease at a Glance

A Listeria infection or listeriosis is an infection caused by a bacteria known as Listeria monocytogenes. It mainly affects newborn infants, elderly patients, pregnant women and patients who have low immunity. Listeria can be spread by several methods. A common cause is ingestion (food-borne transmission) of unpasteurized milk or contaminated vegetables. It can also be transmitted from mother to fetus during pregnancy or directly to the newborn at the time of delivery. Listeriosis can cause a variety of symptoms, depending on the person and the part of the body affected. Pregnant women typically have only fever and other flu-like symptoms, such as fatigue and muscle aches. However, infections during pregnancy can lead to miscarriage, stillbirth, premature delivery, or severe infection of the newborn, including generalized infection (sepsis) or inflammation of the membranes that cover the brain (meningitis). Sometimes listeriosis involves many organs and presents with masses filled with pus (microabscesses or granulomas). Older children with Listeria infections frequently develop meningitis.
Estimated Number of People with this Disease
In the U.S., this disease is estimated to be fewer than


What Information Does GARD Have For This Disease?

Many rare diseases have limited information. Currently GARD is able to provide the following information for this disease:

*Data may be currently unavailable to GARD at this time.
When do symptoms of this disease begin?
The most common ages for symptoms of a disease to begin is called age of onset. Age of onset can vary for different diseases and may be used by a doctor to determine the diagnosis. For some diseases, symptoms may begin in a single age range or several age ranges. For other diseases, symptoms may begin any time during a person's life.
Prenatal Selected
Before Birth
Newborn Selected
Birth-4 weeks
Infant Selected
1-23 months
Child Selected
2-11 years
Adolescent Selected
12-18 years
Adult Selected
19-65 years
Older Adult Selected
65+ years
The common ages for symptoms to begin in this disease are shown above by the colored icon(s).


These symptoms may be different from person to person. Some people may have more symptoms than others and symptoms can range from mild to severe. This list does not include every symptom.
This disease might cause these symptoms:

64 Symptoms

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Last Updated: Nov. 8, 2021