This book remains true to the goals of the first edition to provide a brief, accurate and up-to-date presentation with limited time and the latest syllabus. These aims are achieved by using several different formats, which should make the book useful to students with varying study objectives and learning styles. This book is divided into six sections (Introduction, Microorganisms, Infection and its Transmission, Immunology, The Control and Destruction of Microorganisms, and Introduction to Laboratory Techniques) and twenty chapters based on syllabus of microbiology for Diploma in General Nursing and Midwifery.