A urinary tract infection (UTI) can affect any part of the urinary system. This infection can lead to urethritis (an infection of the urethra), cystitis (an infection of the bladder), or pyelonephritis (an infection of the kidney). A urinary tract makes and stores urine – one of the body’s liquid waste products.
Kidneys, bladder, ureters, and urethra are all parts of the urinary tract.