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Urinary tract infection

A urinary tract infection is an infection that affects part of the urinary tract. When it affects the lower urinary tract it is known as a simple cystitis and when it affects the upper urinary tract it is known as pyelonephritis. Symptoms from a lower urinary tract include painful urination and either frequent urination or urge to urinate, while those of pyelonephritis include fever and flank pain in addition to the symptoms of a lower UTI. In the elderly and the very young, ...

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