Urinary tract infections (UTIs) are fairly common, but not usually serious, and can be effectively treated with antibiotics. The urinary tract is where our bodies make and get rid of urine. It comprises the kidneys, and stretches out to the ureters (the tubes connecting the kidneys to the bladder), down to the bladder, and finally the urethra (the tube that carries urine out of the body). 
 Urinary tract infections in children