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Listeriosis is a serious infection usually caused by eating food contaminated with the bacterium Listeria monocytogenes. An estimated 1,600 people get listeriosis each year, and about 260 die. The infection is most likely to sicken pregnant women and their newborns, adults aged 65 or older, and people with weakened immune systems.

Listeriosis is usually caused by eating food contaminated with Listeria monocytogenes. If infection occurs during pregnancy, Listeria bacteria can spread through the placenta.

Listeriosis is a reportable disease in Oklahoma.

Choose safer foods.

Prevent Listeria | Listeria | CDC

Listeriosis is usually diagnosed when a bacterial culture (a type of laboratory test) grows Listeria from a body tissue or fluid, such as blood, spinal fluid, or the placenta.

Invasive illness: People with an invasive illness are treated with antibiotics.  

Intestinal illness: Most people recover from intestinal illness without antibiotic treatment. Antibiotics are needed only for patients who are very ill or at risk of becoming very ill. People who have an intestinal illness should drink extra fluids while they have diarrhea.