Global Health: Diseases, Programs, Systems, and Policies, Fourth Edition brings together contributions from the world's leading authorities into a single comprehensive text. It thoroughly examines the wide range of global health challenges facing low- and middle-income countries today and the various approaches nations adopt to deal with them. These challenges include measurement of health status, infectious and chronic diseases, injuries, nutrition, reproductive health, global environmental health, and complex emergencies. The book also explores the financing and management of emerging health systems as well as the roles of nation states, international agencies, the private sector, and nongovernmental organizations in promoting health.