Prevention during the twentieth first century, health personnel caring for patients with infectious diseases today must cope with extraordinary new challenges, including a never ending overflow of new information, rapid evolution of drug resistant pathogenic E. coli responsible for urinary and other diseases, and formidable time and cost constraints. In no other area of medicine is the differential diagnosis so wide and often the narrowing of the differential to a precise infection caused by a specific pathogen with established antimicrobial susceptibilities is a matter of great urgency. The...