benefits

• • Results obtained are essential to decisions about public health programs and risk factors contributing to the cause of a disease to develop treatments or preventative strategies to reduce risk factors
• • First epidemiological studies in the 19th century were essential towards development of better sanitation. E.g john snow's link of cholera outbreak in london to sourcing water from broad street pump
• • Epidemiology studies can be used to compare changes to the data over time to evaluate the effectiveness of strategies, estimate trends and predict possible outbreaks. This provides link between research and public health policy and overall benefits of community based approach to treatment, control and prevention of disease