Several brands of canned tuna, sold at Trader Joe’s, Costco (COST), and Walmart (WMT) locations across the country, have been recalled over concerns of clostridium botulinum, a bacterium that can produce a fatal neurotoxin.

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.

The recall was triggered by "a manufacturing defect that may compromise the integrity of the product seal (especially over time), causing it to leak, or worse, be contaminated with clostridium botulinum," the Food and Drug Administration ( FDA) said.