what causes urine infections
A urinary tract infection (UTI) is an infection of any part of the urinary system. 2 Most infections involve the lower urinary tract. The urinary tract is comprised of the bladder, kidneys, ureters and urethra.Urinary tract infections are the second most common type of infection in the body and account for around 8.1 million visits to health care providers each year. The majority of urinary tract infections are caused by the E. Coli bacterium. 2  Common symptoms include a strong, frequent urge to urinate and a painful and burning sensation when urinating. 3  Urinary tract infection is usually diagnosed based on symptoms and testing of a urine sample.