Richwood Meat Company of Merced, California, is voluntary recalling dozens of brands of frozen ground beef patties due to possible contamination with E. coli O157:H7, the USDA’s Food Safety and Inspection Service announced today.

The meat is sold at Winco Foods, Vons, and other grocery stores in several states, including California.

The recalled products are sold under the brand names:

•    Fireriver
•    Ritz Food Service
•    Chef’s Pride
•    Blackwood Farms
•    California Pacific Associates
•    C&C Distributing
•    Golbon
•    Richwood