Urinary Tract Infection - Adults
A urinary tract infection, or UTI, is an infection of the urinary tract. The infection can occur at different points in the urinary tract, including: Bladder. An infection in the bladder is also called cystitis or a bladder infection. Kidneys. An infection of one or both kidneys is called pyelonephritis or a kidney infection. Ureters. The tubes that take urine from each kidney to the bladder are rarely the only site of infection. Urethra. An infection of the tube that empties urine from the bladder to the outside is called urethritis.