This rotation is designed to teach fourth-year medical students principles and methods of population health practice and research. Students will spend approximately three half-days per week with clinical and public health practice activities at the City of Amarillo Department of Public Health, City of Amarillo Department of Environment Health, City of Amarillo Department of Emergency Management, and Region I Texas Department of State Health Services. These activities will include participation in tuberculosis treatment clinics, refugee screening clinics, communicable disease control activities, zoonosis control, restaurant inspection, disaster preparedness, planning, and population health policy development. The remainder of the time the student will do required reading in population and occupational medicine, and plan and participate in population health research activities. During this clerkship student will be expected to write a paper of quality acceptable for publication in peer-reviewed literature. Students will meet regularly with the Course Director but should be sufficiently self-motivated to complete a short research project with limited faculty input. Institutional Review Board (IRB) training (which can be one on-line) must be completed prior to beginning the clerkship.