How do sex and race affect the risk for 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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During the first few months of life, the incidence of UTI in boys exceeds that in girls. By the end of the first year and thereafter, first-time and recurrent UTIs are most common in girls. The incidence of UTI in children aged 1-2 years is 8.1% in girls and 1.9% in boys.

Studies from Sweden have indicated that at least 3% of girls and 1% of boys have a symptomatic UTI by age 11 years. Other data, however, have suggested that 8% of girls have a symptomatic UTI during childhood and that the incidence of a first-time UTI in boys older than 2 years is probably less than 0.5%. In sexually active teenage girls, the incidence of UTIs approaches 10%.

In studies by Hoberman et al, the prevalence of febrile UTIs in white infants exceeded that in black infants. [8] These investigators found that among white female infants younger than 1 year who had a temperature of 39°C or more and were seen in an emergency department, 17% had UTI.

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