What Is It and How Do You Know If You Have It?

Over the past couple of months, vegetables, deli meats, almond milk and more have been recalled for the same foodborne illness: Listeria monocytogenes. While a fairly common bacteria, the spike in its prominence is cause for concern, and you may not be familiar with the signs of infection—and ways to prevent it from spreading in your household.

Here, we’re breaking down what to know about Listeria, how to avoid it and what to do if your household is possibly contaminated, per the U.S. Food & Drug Administration’s recommendations.

What Is Listeria?

Listeria monocytogenes is a bacteria that can cause disease in humans and animals. It can be found in multiple places in the environment, including soil, water, decaying vegetation and animals. When food comes into contact with these environments, it can increase the risk of Listeria to spread. Those infected with Listeria—also known as listeriosis—may start experiencing symptoms within a few hours to as long as two to three days after infection. 

What Are the Symptoms of Listeriosis? 

Common signs of listeriosis are typically mild. Symptoms may include fever, muscle aches, nausea, vomiting and diarrhea. These symptoms can last from days to several weeks, depending on the individual.

In more severe cases, symptoms can include headache, stiff neck, confusion, loss of balance and convulsions. Sensitive groups like young children, those who are pregnant, age 65 or older or immunocompromised individuals are most at risk of experiencing these serious signs. 

If you are noticing signs of Listeria infection after consuming a recalled product, talk to your doctor immediately to receive proper care and avoid spread.

How to Prevent Foodborne Illness At Home

The bacteria can survive and even thrive in refrigerated conditions. That’s why it is important if you have a recalled product stored in your refrigerator, to dispose of it and dispose of any foods that may have been in contact with the contaminated product. After removing any potentially infectious material, follow the below steps, per the FDA guidelines:

• Wash the inside walls and shelves of the refrigerator, as well as any cutting boards, countertops, utensils and any other surfaces where Listeria may be present.
• Then, sanitize these surfaces with a solution of one tablespoon chlorine bleach to one gallon of hot water. Be sure to dry with a clean towel that was not already used.
• Wash your hands with soap and water for at least 20 seconds before and after cleaning the infected area.

The Bottom Line 

Listeria infection is typically non life-threatening, but it can be serious for those in at-risk groups. That’s why it’s important to avoid spread of any foodborne illness by washing your hands regularly, cleaning any produce before serving or eating and wiping down any surfaces after preparing food. Talk to your healthcare provider immediately if you have consumed a recalled product and are experiencing any symptoms of Listeria.