Urinary Tract Infection(UTI) A Urinary Tract Infection, is an infection that occurs in any part of the urinary system, which includes the bladder, urethra, ureters, and kidneys. UTIs are often caused by bacteria, most commonly Escherichia coli (E. coli), and can result in symptoms like frequent and painful urination, a strong urge to urinate, cloudy or bloody urine, and discomfort in the lower abdomen. UTIs are typically treated with antibiotics, and it's important to seek medical attention if you suspect a UTI to prevent complications and discomfort.