The course introduces students to the strategies employed by public health professionals to maintain and enhance the health of the population. Humans will be considered as part of the ecologic systems that influence the patterns and mechanisms of health and disease. Students will come to understand the basic concepts and language of public health science and practice. The course will review the distribution of public health problems and identify important biologic, social and environmental determinants of disease. Examples of interventions designed to solve public health problems will be drawn for both national and international experience.