The U.S. Centers for Disease Control and Prevention is investigating a listeria outbreak linked to Dole packaged salads that has resulted in two deaths.

The outbreak has also sickened 17 people and resulted in 13 hospitalizations across 13 states.

The recalls began at the end of December and are for products with “Best if used by” dates from Nov. 30, 2021, through Jan. 9, 2022.

The CDC also notes these products have codes in the upper right-hand of the package that will begin with the letter B, N, W or Y.