“There are three essentials for good public health programs. The first is the conviction that the basis for public health is to achieve health equity; therefore, the bottom line is social justice in health. Second is the understanding that the science base is epidemiology. It is epidemiology that determines the gaps in social justice, identifies the groups with poor health outcomes, discovers the details of disease causation, and provides clues to how corrective action might improve health. The third essential is the need for good management for efficient implementation of corrective actions.”