Disease transmission dynamics study how infections spread through populations and how interventions change those patterns. This book brings together epidemiological theory, mathematical models, and real-world control strategies to explain why outbreaks grow, peak, or die out. It covers core concepts such as R₀, generation time, and contact patterns, then links them to interventions like vaccination, social distancing, and antimicrobial stewardship. Chapters show how models inform policy, from local outbreak response to national elimination campaigns, and include practical sections on data needs and parameter estimation. Case studies and modeling exercises help readers translate math into actionable public-health decisions. Ideal for epidemiologists, modelers, and public-health practitioners wanting a rigorous yet applied guide.