Almost 37 tons of Texas beef was recalled Sunday after sampling was positive for the rare E. coli O103.

Waco-based  H & B Packing Co., Inc. issued the recall for an estimated  73,742 pounds of boneless beef products that may be contaminated with E. coli O103,  according to the U.S. Department of Agriculture’s Food Safety and Inspection Service (FSIS).

The boneless beef items were produced on March 6, 2017. The following recalled products include:

• 60-lb. box containing boneless beef with case code 69029 and production date 03/06/17.
• Multiple combo bins containing 73,682 lbs of boneless beef with case code 69029 and production date 03/06/17.

The products subject to recall bear establishment number “EST. M13054” inside the USDA mark of inspection. These items were shipped to food manufacturers within the state of Texas. The contamination was discovered when FSIS was notified by the State of Texas’ Meat Safety Assurance Unit about a positive non-O157 Shiga toxin-producing E. coli sample.

There have not yet been any  confirmed reports of illnesses due to consumption of these products.

Many clinical laboratories do not test for non-O157 Shiga toxin-producing E. coli (STEC), such as STEC O103 because it is harder to identify than STEC O157. People can become ill from STECs 2–8 days (average of 3–4 days) after consuming the organism. Most people infected with STEC O103 develop diarrhea (often bloody), and vomiting. Some illnesses last longer and can be more severe. Infection is usually diagnosed by testing of a stool sample. Vigorous rehydration and other supportive care is the usual treatment; antibiotic treatment is generally not recommended.

Most people recover within a week, but, rarely, some develop a more severe infection. Hemolytic uremic syndrome (HUS) is uncommon with STEC O103 infection. HUS can occur in people of any age but is most common in children under 5 years old, older adults and persons with weakened immune systems. It is marked by easy bruising, pallor, and decreased urine output. Persons who experience these symptoms should seek emergency medical care immediately.

FSIS and the company are concerned that some product may be frozen and in customers’ freezers.

Customers who have purchased these products are urged not to use them. These products should be thrown away or returned to the place of purchase.