This 2nd Edition offers students a comprehensive approach to the essential information they need in identifying etiologic agents of infectious diseases. New content has been added on emerging viral pathogens, newly recognized parasitic agents, emerging resistance, and emerging technologies. Pedagogical features include tables, procedures, case studies, and illustrations. Information is presented to beginning level students in a logical approach to microbiology progressing from core principles and concepts to systematic identification of etiologic agents of infectious disease. A saleable instructor's CD-ROM is also available.