You are working the night shift on the Answer-Line, a telephone service provided by a health management organization for its enrollees. You receive a call from a 26-year-old woman. She has been experiencing painful urination for the past 24 hours. This is the first time she has had this condition and she describes herself as otherwise healthy. 1) The patient reports a fever of 101.5F and nearly constant urge to urinate, though she often voids little or no urine. What is your preliminary diagnosis? 2) What is the most likely causative agent for this condition? 3) There is a potential risk for progressing to a more serious condition. What is it?