The book is all about the life history of 50 renowned Microbiologist and their contribution towards the development of the Field. The book also describes the "legacy" of the researchers. Further, the book also elaborate about the 7 deadliest diseases of the History. It also records the number of casualities due to the disease across the globe. It also illustrates the diseases about the "Introduction", "Number of death recorded across the globe", "About the pathogen", "Pathogenesis", "Laboratory diagnosis", "Epidemiology". "Treatment". The book is very helpful to the Undergraduate and Postgraduate students to recollect the history of Microbiology.