Recent developments have brought into a new focus the importance of knowledge and skills in biology for the study of public health. Understanding how and why manifestations of a disease occur and incorporating this knowledge into public health decision-making is the very essence of public health practice. As the only text of its kind, Essentials of Public Health Biology explores pathophysiology within the context of the disciplines and profession of public health. Ideal as a concise review for the student with a science background, this text applies the scientific clinical foundation to the practice of public health through case studies, exercises, points for discussion, and test questions.