Tuna sold in 26 states and in Washington, D.C., was recalled over concerns that it may have been contaminated. The stores affected include Trader Joe’s, Genova, Van Camp’s and H-E-B.

With 90% of the U.S. population living within 10 miles of a Walmart store, recalls of products they sell can have widespread effects. Labeling mistakes, safety concerns and contamination can all cause food recalls. Prescriptions and other products can also be recalled.

A canned tuna recall at Costco and other stores over a botulism risk has consumers on alert. Check if your tuna is affected and what to do next.