What are common causes of pediatric urinary tract infection (UTI)?

Updated: Mar 19, 2019
  • Author: Donna J Fisher, MD; Chief Editor: Russell W Steele, MD  more...
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Bacterial infections are the most common cause of UTI, with E coli being the most frequent pathogen, causing 75-90% of UTIs. Other bacterial sources of UTI include the following:

  • Klebsiella species

  • Proteus species

  • Enterococcus species

  • Staphylococcus saprophyticus, especially among female adolescents and sexually active females

  • Streptococcus group B, especially among neonates

  • Pseudomonas aeruginosa

Fungi (Candida species) may also cause UTIs, especially after instrumentation of the urinary tract. Adenovirus is a rare cause of UTI and may cause hemorrhagic cystitis.

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