Epidemiology is fundamental to public health, providing the tools required to detect and quantify health problems and identify and evaluate solutions. Essential Epidemiology is a clear, engaging and methodological introduction to the subject. Now in its fifth edition, the text has been thoroughly updated. Its trademark clear and consistent pedagogical structure makes challenging topics accessible, while the local and international examples, including from the COVID-19 pandemic, encourage students to apply theory to real-world cases. Statistical analysis is explained simply, with more challenging concepts presented in optional advanced boxes. Each chapter includes information boxes, margin notes highlighting supplementary facts and question prompts to enhance learners' understanding. The end-of-chapter questions and accompanying guided solutions promote the consolidation of knowledge. Written by leading Australian academics and researchers, Essential Epidemiology remains a fundamental resource and reference text for students and public health practitioners alike.