FDA recalls 1.5 million bags of shredded cheese, including those sold at Target, Walmart, Aldi

A massive cheese recall affecting brands such as Borden's sold by major retailers, including Aldi, Target and Walmart, in the United States and Puerto Rico is underway, the Food and Drug Administration has announced.

The recall affects more than 1.5 million packages of shredded cheese the FDA said could be contaminated with metal shavings and fragments.

The Hiram, Ohio-based Great Lakes Cheese Co. Inc. issued a voluntary recall of the products on Oct. 3, citing the potential risks.

On Monday, the FDA reclassified the risk to a so-called Class 2 contamination, which refers to contamination "likely" to cause serious health issues. According to the FDA, a Class 2 risk signifies consuming the contaminated product could cause "temporary or medically reversible adverse health consequences."