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Causes of Urinary Tract Infections
Causes of Urinary Tract Infections
Normal urine is sterile and contains fluids, salts and waste products. It is free of bacteria, viruses and fungi. Urine travels through the urethra, a hollow tube that carries the urine from the bladder to outside of the body.
An infection occurs when microorganisms, usually bacteria from the digestive tract, cling to the opening of the urethra and begin to multiply.
E. Coli and Urinary Tract Infections
Most infections arise from Escherichia coli (E. coli) bacteria, which normally live in the colon.