Quaker Oats is expanding its recall of granola bars, cereals and other snacks over concerns they could be contaminated with salmonella.

Twenty-four products have been added to the recall list that was originally announced in December, according to a statement by the Food and Drug Administration. Salmonella is an organism that can cause serious and sometimes fatal infections in young children, older people or those with weakened immune symptoms. Healthy people infected with salmonella often experience fever, diarrhea, bloody stool, chills, nausea, vomiting and abdominal pain.

Symptoms of infection usually occur 12 hours to three days after exposure and infections generally last a few days to a week.

The list of recalled items includes Quaker Chewy Granola Bars Amazing Apple and Splendid Strawberry varieties, Cap’n Crunch Treats Crunch Berries Cereal Bar, Quaker Chewy Granola Breakfast Cereal Chocolate and Strawberry, Cap’n Crunch Ooops! All Berries Cereal, Cap’n Crunch Instant Oatmeal, Gatorade Protein Bar Peanut Butter Chocolate, and Munchies Snack Mix, among others. You can see a complete list of recalled items and UPC numbers here.

Consumers are asked to check their pantries for any of the recalled products and dispose of them. You can contact Quaker Consumer Relations at 1-800-492-9322 or visit www.quakergranolarecall.com for information on reimbursement.