Below is an instruction from Human. Write a response.
    ### Instruction:
    What causes Hemolytic Uremic Syndrome in Children ?
    ### Response:
    The most common cause of hemolytic uremic syndrome in children is an Escherichia coli (E. coli) infection of the digestive system. The digestive system is made up of the gastrointestinal, or GI, tracta series of hollow organs joined in a long, twisting tube from the mouth to the anusand other organs that help the body break down and absorb food.
    