Epidemiologic speculations and research findings increasingly blaze across media headlines and heighten anxiety among the public. Understanding the foundations of such news can be daunting. Now in its third edition, Epidemiology for Public Health Practice has become a favorite textbook for undergraduate and graduate students new to epidemiology by providing a comprehensive look at all major topics, from study designs and descriptive epidemiology, to quantitative measures and terminology. Distinguishing itself from other texts with its accessible writing style and immediacy of information presented, the Third Edition has been extensively revised, with updated data and statistics essential to understanding the importance of epidemiology to public health.