What is the cause of the pollution of urinary tract?

What is the cause of the pollution of urinary tract? What is the reason for the pollution of urinary tract under the protection of the question? The answer is the bacteria that enter the urethra and rise in the urinary tract are often the cause of urinary tract infections (UTI in Latin). The bacteria that usually live in the colon and are in feces are the most common source of pollution. If you have sex, it can lead to the introduction of bacteria in the urinary tract, especially in women. The closer, which is small and flexible tubes, is placed in the bladder for the purpose of draining urine from the body is a common source of infections in hospital -based people or who have long lived in care institutions. Sometimes bacteria can move in the bloodstream or lymphatic system and cause pollution in the kidneys or bladder.