Update 4 p.m. Tuesday : Solid Gold Health Products for Pets issued a voluntary recall Tuesday of one batch of WolfCub Large Breed Puppy Food and one batch of Solid Gold WolfKing Large Breed Adult Dog Food , distributed in the United States and Canada between January and May 2012. Read more here.

Update 4 p.m. Tuesday : Solid Gold Health Products for Pets issued a voluntary recall Tuesday of one batch of WolfCub Large Breed Puppy Food and one batch of Solid Gold WolfKing Large Breed Adult Dog Food , distributed in the United States and Canada between January and May 2012. Read more here.

Earlier: Diamond Pet Foods has expanded its recall of dog food made at its Gaston, S.C., plant to include more brands, including some Kirkland Signature products, Costco’s private label, because of Salmonella contamination at the facility.

Kirkland products distributed in Washington were not included in the recall, according to the Food and Drug Administration (FDA). (For more information on this recall, go here.)

The U.S. Centers for Disease Control and Prevention found that several brands of dry dog food made at Diamond’s South Carolina facility tested positive for Salmonella Infantis, a rare strain that has infected at least 14 people. The individuals became ill either through handling the tainted kibble or having contact with a dog that had eaten it. The outbreak has now spread across nine states.

Although Diamond has claimed no dog illnesses have been linked to the outbreak, Food Safety News reports the claim may be leaving some pet owners with a false sense of security because state and federal agencies don’t track pet illnesses. So although no dog illnesses have been reported, that doesn’t mean no dog illnesses have occurred, it says.

The Kirkland Signature products included in the recall are: