Listeria infection (listeriosis)

ARTICLE SECTIONS

Introduction Signs and symptoms Causes Risk factors When to seek medical advice

Screening and diagnosis Complications Treatment Prevention

Introduction

A listeria infection (listeriosis) is a relatively uncommon food-borne illness. The bacteria that cause listeria infections (Listeria monocytogenes) are found in soil and water. Many wild and domestic animals also carry the bacteria. Listeria has the unusual ability to grow in cold environments, including certain refrigerated or frozen foods.

Most otherwise healthy people exposed to listeria don't become ill. However, a listeria infection can be devastating for pregnant women and people who have weak immune systems. Listeria infections cause about 500 deaths a year in the United States, according to the Centers for Disease Control and Prevention (CDC).

Prompt antibiotic treatment can help curb the effects of a listeria infection. Prevention is key, however, starting with simple food-safety precautions.

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Signs and symptoms