The findings of most of these studies were in agreement with previous reports indicating that EHEC strains possessed stx, stx2, hlyA, and eaeA gene determinants that enhance their potential to cause infections such as diarrhea, hemorrhagic colitis (HC) and hemolytic uremic syndrome (HUS) in humans (Farrokh et al., 2013). Here, STX2 is linked to hemolytic-uremic syndrome.