Dog treats made by a manufacturer in Illinois are being recalled because of possible salmonella contamination.

The pet chews are called Pig Ears for Pet Treats and are made by the Keys Manufacturing Co. Inc. of Paris, Ill. So far only one canine illness in Missouri has been linked to the treats.

The treats are being recalled not only for the risk of infecting animals with salmonella, but because of the human risk when they handle the chews.

The bacteria can cause serious and sometimes fatal infections in young children, elderly people and those with weakened immune systems. Symptoms include fever, diarrhea, nausea, vomiting and abdominal pain. Pets with salmonella may be lethargic and have diarrhea or bloody diarrhea fever and vomiting.

The pet treats were distributed in Arkansas, Florida, Illinois, Indiana, Iowa, Kentucky, Louisiana, Michigan, Minnesota, Missouri, Ohio, Pennsylvania, Texas and Virginia.

Consumers can return the pet treats to the place of purchase for a full refund.

The Associated Press contributed to this report.