STEC can cause food poisoning even at very low doses and produce cytotoxins called Shiga toxin 1 (Stx1) and Shiga toxin 2 (Stx2), leading to hemorrhagic colitis, thrombotic thrombocytopenic purpura, and hemolytic uremic syndrome (HUS) [4]. The gene discussed is STX1A; the disease is hemolytic-uremic syndrome.