Originally posted 2012-08-25 05:49:59. Republished by Blog Post Promoter Urinary Tract Infection is due to an infection the lower urinary tract, involving the bladder, and sometimes the urethra and the ureter. It is ascending infection caused commonly by E. coli, Enterobacter, Pseudomonas and Serratia. Clients who are at risk for having urinary tract infection are...