The U.S. Public Health Service Commissioned Corps is a group of health professionals who work to protect and promote public health in the United States. They are part of the U.S. Department of Health and Human Services and serve in various roles, including epidemiology, health education, and environmental health. Members are commissioned officers and can be deployed during public health emergencies. Commissioned Corps officers work in diverse settings, such as federal agencies, tribal health organizations, and international health programs. They focus on addressing health disparities, responding to disease outbreaks, and improving health systems. Their mission is to enhance the nation's health and well-being through dedicated service.