Gram negative enterics constitutes a serious problem in urinary tract infection in many parts of the world. It has been estimated that symptomatic urinary tract infections (UTI) occurs in as many as 7 million visits to emergency units and 100,000 hospitalizations annually in USA (Schappert, 1999). UTI has become the most common hospital-acquired infection, accounting for as many as 35% of nosocomial infections, and it is the second most common cause of bacteraemia in hospitalized patients (Stamm, 2002; Weinstein, 1997). UTI accounts for a significant part of the work load in clinical microbiology laboratories and enteric bacteria (in particular, Escherichia coli) remain the most frequent cause of UTI, although the distribution of pathogens that cause UTI is changing (Ojiegbe and Nworie, 2000). There are several factors and abnormalities of UTI that interfere with its natural resistance to infections. These factors include sex and age (Ojiegbe and Nworie, 2000) disease, hospitalization and obstruction (Epoke et al., 2000). Females are how-