Epidemiology is the branch of medicine which is concerned with the distribution, incidence and possible control of diseases and other factors relating to health. This book gives an overview on the diverse aspects of epidemiological research, brings together the expertise and enthusiasm of an international panel of leading researchers to provide a coherent overview of the field. The topics included in this book are epidemiology of varied manifestations of neuro-psychiatric disorders, virology and epidemiology, the epidemiology of dermatomycoses and Candida spp. infections, epidemiology of wildlife tuberculosis, epidemiologic access to the course of microbial nature of milk and milk products, Cox proportional hazards paradigm, epidemiology of primary immudeficiency diseases, family-based genetic epidemiology and many more. This book includes writings of international experts and is a worthy resource for clinicians, researchers and students; who intend to address these issues.