what is the most common cause of uncomplicated urinary tract infections?
By far, the most common uropathogen identified in uncomplicated UTIs is Escherichia coli, accounting for about 85% of all cases. The remaining 15% are caused primarily by Staphylococcus saprophyticus and Klebsiella and Proteus species. Signs and symptoms of a UTI vary depending on the extent of the infection.