This book opens the world of microbes and parasites around us, so that we are able to treat disease caused by them. This is the only book which comprises of both microbiology and parasitology under one bind. Fortified with details about the role of microbiology in nursing, role or collection, immunology, microbiology, parasitology and mycology. Student friendly and easy to understand. Immunology part is made simple, so that students can easily understand the concepts of immunity in dealing with the foreign agents. Key points have been included at the end of each chapter. Some important additional information has been given in grey boxes. Frequently asked questions in various exams (MBBS, BHMS and Nursing) have been included at the end of the book. Chapter on immunisation has been included in the book.