Epidemiology

"What is epidemiology? How can we trace the causes of a disease, or tell when a pandemic has begun?...Saracci provides an insight into the logic and methods of epidemiology to show the value of investigating health and disease in human populations. He explains basic statistical concepts necessary for planning and analyzing epidemiological studies, and dispels common misunderstandings abouth their interpretation, looking not only at their ethical and political implications, but on public health as a whole" -- publisher description.