Editing Urinary tract infection (section)

==Epidemiology==
Urinary tract infections are the most frequent bacterial infection in women.<ref name=AFP2011/> They occur most frequently between the ages of 16 and 35{{nbsp}}years, with 10% of women getting an infection yearly and more than 40–60% having an infection at some point in their lives.<ref name=Sal2011/><ref name=Review08/> Recurrences are common, with nearly half of people getting a second infection within a year.<!-- <ref name=Sal2011/> --> Urinary tract infections occur four times more frequently in females than males.<ref name=Sal2011/> Pyelonephritis occurs between 20 and 30 times less frequently.<ref name=Review08/> They are the most common cause of [[hospital-acquired infection]]s accounting for approximately 40%.<ref name=Nurse2010>{{cite book | vauthors = Smeltzer SC, Bare BG, Hinkle JL, Cheever KH | chapter = Management of Patients with Urinary Disorders |title=Brunner & Suddarth's textbook of medical-surgical nursing. |year=2010 | publisher=Wolters Kluwer Health/Lippincott Williams & Wilkins|location=Philadelphia|isbn=978-0-7817-8589-1|page=1359|chapter-url=https://books.google.com/books?id=SmtjSD1x688C&pg=PA1359|edition=12th|url-status=live|archive-url=https://web.archive.org/web/20160428194226/https://books.google.com/books?id=SmtjSD1x688C&pg=PA1359|archive-date=28 April 2016}}</ref> Rates of asymptomatic bacteria in the urine increase with age from two to seven percent in women of child-bearing age to as high as 50% in elderly women in care homes.<ref name=NA2011/> Rates of asymptomatic bacteria in the urine among men over 75 are between 7–10%.<ref name=Elder2011/> 2–10% of pregnant women have asymptomatic bacteria in the urine and higher rates are reported in women who live in some underdeveloped countries.<ref name=":0">{{cite journal | vauthors = Smaill FM, Vazquez JC | title = Antibiotics for asymptomatic bacteriuria in pregnancy | journal = The Cochrane Database of Systematic Reviews | volume = 2019 | issue = 11 | pages = CD000490 | date = November 2019 | pmid = 31765489 | pmc = 6953361 | doi = 10.1002/14651858.CD000490.pub4 }}</ref>

Urinary tract infections may affect 10% of people during childhood.<ref name=Sal2011/> Among children, urinary tract infections are most common in uncircumcised males less than three months of age, followed by females less than one year.<ref name=PeadsNA2011/> Estimates of frequency among children, however, vary widely. In a group of children with a fever, ranging in age between birth and two years, 2–20% were diagnosed with a UTI.<ref name=PeadsNA2011/>