Quantitative epidemiology provides the principles and tools for a better understanding of disease occurrence and spread in (animal) populations, and in particular diseases with a multifactoral aetiology. These tools can aid interpretation, decision-making and disease prevention.This book comprises a series of workshops and clinics where theory and practical issues concerning quantitative epidemiological issues are addressed. It is not intended as a textbook, but as an aid to self training. The book contains detailed examples from the field: answers are given to questions.