On March 2, 2012, a 38-week pregnant woman, in New Jersey, was diagnosed with Listeria monocytogenes. Subsequent investigation and product analysis implicated, and then confirmed, the presence of L. monocytogenes in a sample of Los Corrales Queso Fresco Fresh Cheese and Banana Leaf code dated 03/16/12. El Ranchero del Sur cheese products are sold in Mexican and Latin American grocery stores, restaurants, and other Hispanic food establishments under the name brands El Ranchero, Los Corrales, and Carnes Don Beto with the plant number 34-0013669 marked on the label. All products are 14 ounces in weight except for the Queso Hebra Oaxaca String Cheese ball which is in 10 pound packages.