causes of uti in newborn
Urinary Tract Infection (UTI) in Children. A urinary tract infection is a bacterial infection of the urinary bladder ( cystitis), the kidneys ( pyelonephritis), or both. Urinary tract infections are caused by a bacterial infection. Newborns and infants may have no symptoms other than a fever, whereas older children have pain or burning during urination, pain in the bladder region, and a need to urinate frequently. The diagnosis is based on an examination and culture of the urine.