Skip navigation

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

URL of this page: https://medlineplus.gov/listeriainfections.html

Listeria Infections

Also called: Listeriosis
On this page

Learn More

  • No links available

See, Play and Learn

  • No links available

Resources

Summary

Listeriosis is a foodborne illness caused by Listeria monocytogenes, bacteria found in soil and water. It can be in a variety of raw foods as well as in processed foods and foods made from unpasteurized milk. Listeria is unlike many other germs because it can grow even in the cold temperature of the refrigerator.

Symptoms include fever and chills, headache, upset stomach and vomiting. Treatment is with antibiotics.

Anyone can get the illness. But it is most likely to affect pregnant women and unborn babies, older adults, and people with weak immune systems. To reduce your risk:

  • Use precooked and ready-to-eat foods as soon as you can
  • Avoid raw milk and raw milk products
  • Heat ready-to-eat foods and leftovers until they are steaming hot
  • Wash fresh fruits and vegetables
  • Avoid rare meat and refrigerated smoked seafood

Centers for Disease Control and Prevention

Start Here

Symptoms

Diagnosis and Tests

Prevention and Risk Factors

Clinical Trials

Children

Women

Patient Handouts

The information on this site should not be used as a substitute for professional medical care or advice. Contact a health care provider if you have questions about your health.