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<p>Asymptomatic bacteriuria occurs in up to 6% of healthy individuals. It affects 18% of people with diabetes (mostly women), and 20% of elderly individuals (more often women than men). The reasons for the lack of symptoms are not well understood.</p>

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<p xmlns:ax="http://www.adam.com">Asymptomatic bacteriuria is a significant number of bacteria in the urine that occurs without any of the usual symptoms (burning during urination or increased frequency of urination). Asympomatic bacteruria may not need treatment, which makes it different from a bacterial <a href="http://www.nlm.nih.gov/medlineplus/ency/article/000521.htm">urinary tract infection</a>.</p>