Microbiology is the study of microorganisms whether unicellular, multicellular or acellular, along with their function, structure and classification. The branches of microbiology are either classified into pure and applied sciences or divided according to taxonomy. Bacteriology, virology, mycology and parasitology are the sub-disciplines of microbiology. Bacteriology studies various aspects of the ecology, biochemistry, morphology and genetics of bacteria. Virology is the study of viruses, their structures, interactions with host organisms, the techniques to isolate and culture them, classification and evolution, their use in research and therapy, etc. Mycology is associated with the study of fungi and encompasses the study of their biochemical and genetic properties, taxonomy, their uses and the threats that they pose. The study of parasites, their host and the relationship between them is called parasitology. This book contains some path-breaking studies in the field of microbiology. The various advancements in this area of study are glanced at and their applications, as well as ramifications, are looked at in detail. This book, with its detailed analyses and data, will prove immensely beneficial to professionals and students involved in this area at various levels.