Acute Communicable
Disease Control

Contact Information
County of Los Angeles
Department of Public Health
Acute Communicable Disease Control
313 N. Figueroa Street, #212
Los Angeles, CA 90012
Phone: (213) 240-7941
Fax: (213) 482-4856

Call 211 For Information 24/7

Have questions about things like where to go for vaccinations or other health care services?

Call 2-1-1.

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Acute Communicable Disease Control
Listeriosis, Nonperinatal

image of a meat and cheese on a plateListeriosis is a disease transmitted primarily through consumption of food contaminated with Listeria monocytogenes, a gram-positive bacterium. L. monocytogenes is found in soil and water, and can contaminate raw foods (e.g., uncooked meats and vegetables), as well as processed foods that become contaminated after processing (e.g., soft cheeses and cold cuts). Unpasteurized (raw) milk and foods made from unpasteurized milk may also contain the bacterium. Common symptoms of listeriosis include fever, muscle aches, headache, nausea, diarrhea, and neck stiffness. A case of nonperinatal listeriosis is one that occurs in persons other than pregnant women and/or their fetuses, neonates, or infants up to 42 days after birth. Historically, nonperinatal listeriosis presents as meningoencephalitis and/or septicemia, primarily affecting elderly and immunocompromised persons, such as those with cancer or HIV, and those on immunosuppressive therapy.

Additional Resources


Publications & Archives
  • Listeriosis Brochure: English / Spanish  Adobe PDF Document
  • Queso Fresco - Safe Cheese and Unsafe Cheese: English / Spanish  Adobe PDF Document

    Clarification: "Ranchero" is a trademark of the Cacique company, in Industry, California.
    Cacique's "Ranchero" is made with pasteurized milk.
    Any raw milk cheese advisory is not intended to include this Cacique product.

Salmonella FAQ
(English) (Spanish)

Reptile-Associated Salmonella
Public Health has made reasonable efforts to provide accurate translation. However, no computerized translation is perfect and is not intended to replace traditional translation methods. If questions arise concerning the accuracy of the information, please refer to the English edition of the website, which is the official version.
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