Understanding Listeriosis

What is Listeriosis?

Listeriosis is a foodborne bacterial infection caused by Listeria monocytogenes. This bacteria can survive in refrigerated temperatures, making it particularly challenging to control.

Risk Groups

Certain individuals are at higher risk for listeriosis:

• Pregnant women
• Newborns
• Adults over 65
• People with weakened immune systems
• Individuals with chronic conditions

Common Sources

• Unpasteurized dairy products
• Ready-to-eat deli meats
• Soft cheeses
• Raw sprouts
• Smoked seafood

Symptoms

Mild Cases

• Fever
• Muscle aches
• Nausea
• Diarrhea

Severe Cases

• Headache
• Stiff neck
• Confusion
• Loss of balance
• Convulsions

Diagnosis & Treatment

Diagnosis

• Blood tests
• Spinal fluid analysis
• Other tissue cultures

Treatment

• Antibiotics (typically ampicillin)
• Hospitalization for severe cases
• Supportive care

Prevention

1. Avoid high-risk foods during pregnancy
2. Properly heat ready-to-eat foods
3. Maintain proper food storage temperatures
4. Clean refrigerators regularly
5. Practice good food safety habits

When to Seek Medical Care

Seek immediate medical attention if you:

• Experience severe symptoms
• Are pregnant and develop fever
• Have a weakened immune system and develop any symptoms

Long-term Outlook

Most healthy individuals recover completely with proper treatment. However, serious complications can occur in high-risk groups.

Additional Resources

• Contact your healthcare provider
• CDC Food Safety Guidelines
• Local Health Department