Epidemiology is the study of the distribution and determinants of health-related states or events(including disease), and the application of this study to the control of diseases and other healthproblems. Various methods can be used to carry out epidemiological investigations: surveillance anddescriptive studies can be used to study distribution; analytical studies are used to study determinants.This book gives an introduction to the concepts and methods of epidemiology. This is substantiated bynumerous examples from scientific literature. Further, individual chapters deal with the application ofepidemiology to communicable diseases. This book for advanced undergraduate and graduatestudents can also serve as a reference for epidemiologists working in the field, industrial hygienists,infectious disease nurses, and staff epidemiologists. Coverage progresses from foundations, diseaseconcepts, and epidemiological measures of heal.