Urinary tract infection in older adults.

Urinary tract infection is common among older adults, although most individuals are asymptomatic. The prevalence of bacteriuria varies significantly with living situation and functional status. Asymptomatic bacteriuria is a benign condition and is not an independent risk factor for mortality in older adults. Treatment of asymptomatic bacteriuria generally is not indicated, but symptomatic urinary tract infection of the lower or upper tract dictates antibiotic therapy.