What does the prevention of disease look like within the context of epidemiology? How does the natural history of disease (prepathogenesis and pathogenesis, active versus passive signs and symptoms) speak into prevention of disease?

 Epidemiology

What does the prevention of disease look like within the context of epidemiology? How does the natural history of disease (prepathogenesis and pathogenesis, active versus passive signs and symptoms) speak into prevention of disease?