Defines the discipline of public health, the nature and scope of public health activity, and the challenges that face public health in the 21st century. Designed for undergraduate health science and nursing students, the text helps readers with their understanding of the nature and scope of public health and the challenges facing the field into the future. Note: Users must register for and login to a personal ClinicalKey account to open a book chapter in PDF. (Due to publisher restrictions, some titles may not provide PDFs of book chapters; for those titles, only HTML full-text is available.) Contributor(s): Mary Louise Fleming; Elizabeth Parker; Ignacio Correa-Velez. ISBN: 9780729543057.