What is the nature of epidemiology? Why is epidemiology so important in the context of health, and particularly public health, in South Africa? How can it help us answer important questions in clinical medicine and public health? Epidemiology: A Research Manual for South Africa 3e provides lecturers with useful resources on which to base introductory Epidemiology and Research Methods courses and helps to answer these questions. Written by South African experts, Epidemiology: A Research Manual for South Africa 3e is aimed at undergraduate or postgraduate students encountering epidemiology and, more generally, quantitative public health research methods for the first time. Epidemiology is taught within the following programmes: MBChB, BCur, Diploma: Primary Health Care, and National Diploma: Environmental Health. It enables readers to evaluate data critically and to report their findings lucidly and accurately.