Editing Urinary tract infection (section)

===Children===
To make the diagnosis of a urinary tract infection in children, a positive urinary culture is required.<!-- <ref name=PeadsNA2011/> --> Contamination poses a frequent challenge depending on the method of collection used, thus a cutoff of 10<sup>5</sup>{{nbsp}}CFU/mL is used for a "clean-catch" mid stream sample, 10<sup>4</sup>{{nbsp}}CFU/mL is used for catheter-obtained specimens, and 10<sup>2</sup>{{nbsp}}CFU/mL is used for [[suprapubic aspiration]]s (a sample drawn directly from the bladder with a needle).<!-- <ref name=PeadsNA2011/> --> The use of "urine bags" to collect samples is discouraged by the [[World Health Organization]] due to the high rate of contamination when cultured, and catheterization is preferred in those not toilet trained.<!-- <ref name=PeadsNA2011/> --> Some, such as the [[American Academy of Pediatrics]] recommends [[renal ultrasound]] and [[voiding cystourethrogram]] (watching a person's urethra and urinary bladder with real time x-rays while they urinate) in all children less than two years old who have had a urinary tract infection.<!-- <ref name=PeadsNA2011/> --> However, because there is a lack of effective treatment if problems are found, others such as the [[National Institute for Health and Care Excellence]] only recommends routine imaging in those less than six months old or who have unusual findings.<ref name=PeadsNA2011/>