The primary focus of the field of epidemiology is to study the distribution, determinants, and control of diseases and health conditions in populations. Epidemiologists examine patterns of health-related events to identify risk factors and develop public health strategies. This discipline is essential for tracking disease outbreaks, understanding their modes of transmission, and evaluating the effectiveness of interventions. By analyzing data from populations, epidemiology helps inform health policies and preventive measures, guiding responses to public health issues and improving community well-being.