Below is an instruction from Human. Write a response.
    ### Instruction:
    What to do for What I need to know about My Child's Urinary Tract Infection ?
    ### Response:
    - A urinary tract infection (UTI) is an infection in the urinary tract. Infections are caused by microbesorganisms too small to be seen without a microscope.  - Most UTIs are caused by bacteria that live in the bowel, the part of the digestive tract where stool is changed from liquid to solid.
    