<s>[INST] How common are UTIs in children, and what causes them? [/INST] About 1 in 30 children will experience a UTI at some point. UTIs are caused by bacteria in the bladder which can lead to inflammation of the bladder and/or kidneys. Specifically, children can be at risk for UTIs due to some of these common reasons: 

Anatomic problems with the bladder or kidneys 
Poor bladder emptying 
Holding the urine
Constipation Source: LURIE CHILDRENS ORG. Link: https://www.luriechildrens.org/en/blog/common-questions-about-urinary-tract-infections-in-children/. Field: Urology. Disease: Urinary Tract Infection </s>