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Listeria Monocytogenes Contamination Prompts Cheese Recall

EMSL Analytical offers reliable testing services for Listeria, E. coli, and other food pathogens


Several varieties of cheese made by El Ranchero Del Sur, LLC of South River, NJ have been recalled due to possible Listeria monocytogenes contamination. Fresh cheese, string cheese, and fresh cheese in banana leaves were distributed to retail stores, supermarkets, and restaurants in New Jersey and Pennsylvania between February 23, 2012 and March 14, 2012.
Listeriosis, the infection caused by the bacteria, is usually not life-threatening for people with strong immune systems. Healthy individuals may only experience high fever, severe headache, stiffness, nausea, abdominal pain and, diarrhea. However, for children, the elderly, and individuals with weak immune systems, a severe infection can result in death.
Infected pregnant women experience only mild flu-like symptoms, but listeriosis during pregnancy can lead to miscarriage, stillbirth, or a potentially fatal infection of the newborn.
The products were sold as “Queso Fresco El Ranchero Del Sur,” “Queso Fresco en Hoja De Platano Los Corrales,” and “Queso Hebra Queso Oaxaca El Ranchero Del Sur.”
“EMSL Analytical, Inc. tests for Listeria and other pathogens in food products,” notes Joseph Frasca, Senior VP of Marketing at EMSL. “We use various validated methods that are recognized and accepted by regulation agencies. We also offer rapid pathogen screens where appropriate and requested.”
For more information on EMSL’s food testing services, please contact EMSL at (800) 220-3675, email, or visit or
About EMSL Analytical, Inc.
EMSL Analytical, Inc. is a full service testing company providing quality lab services under the same private ownership since 1981. Including the corporate lab facility in Cinnaminson, NJ, EMSL Analytical operates over thirty laboratories nationwide in the US and Canada. We provide analytical services for environmental, indoor air quality (IAQ), industrial hygiene, forensics and materials science, consumer products, food safety, PCR, pharmaceutical, asbestos, lead, and radiological samples. The company has an extensive list of accreditations from leading organizations, as well as state and federal regulating bodies. Please see our website for a complete listing of accreditations.


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