The recalled products may not fully seal shut and may be contaminated with one of "the most lethal substances known," according to WHO.

Tri-Union Seafoods voluntarily recalled select lots of canned tuna products sold under the Genova, Van Camp’s, H-E-B, and Trader Joe’s brand names in 27 states. Shutterstock.

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.