There are several different causes of urinary tract infections, with bacteria being the most common cause, while fungi or viruses are the less common causes of urinary tract infections. Of various bacteria, the Escherichia coli (E. coli) bacterium causes the vast majority of urinary tract infections, although chlamydia and mycoplasma bacteria can also cause urinary tract infections in the urethra. Bacteria and other causes of urinary tract infections can enter the urinary tract in several different ways, with various medical conditions, life experiences, and hygiene habits contributing to an increased risk of contracting a UTI, including the following: • Blocked flow of urination • Bowel or urinary incontinence • Certain forms of contraception, including cervical caps, diaphragms, and spermicides • Compromised or suppressed immune systems • Diabetes • Excessive use of antibiotics • Improper tampon usage • Kidney stones • Menopause • Poor personal hygiene • Pregnancy • Sexual activity, especially with new or multiple partners • Trouble with fully emptying one’s bladder