Types of urinary tract infections - reduce tract infections (bladder - cystitis, urethritis, connected glands) are the most frequent and are generated largely by Escherichia coli, Proteus seldom or mycoplasma and fungi. Higher tract infections: kidney nephrons, papillae, potassium, basin, ureters. Infections of renal parenchyma are more serious than the lessen urinary tract. My websites: Cat Urinary Tract Infection