Book excerpt: An in-depth look at disparities in health and health care, fully updated for 2021 Vulnerable Populations in the United States, 3rd Edition provides a general framework for studying vulnerable populations and summarizes major health and health care disparities by race/ethnicity, socioeconomic status, and health insurance coverage. This updated contains the latest statistics and figures, incorporates new information related to Healthy People 2020, analyzes the latest data and trends in health and health care disparities, and provides a detailed synthesis of recent and increasingly expansive programs and initiatives to remedy these disparities. In addition, the Third Edition offers new coverage of health care reform, the "deaths of despair" (suicide, opioids, etc.), and the global primary care initiative. Based on the authors' teaching and research at the Johns Hopkins Bloomberg School of Public Health and the Keck School of Medicine of the University of Southern California, this landmark text is an important resource for students, researchers, practitioners, and policymakers for learning about vulnerable populations. The book's Web site includes instructor's materials that may be downloaded. Gain a general understanding of health and health care disparities related to race/ethnicity, socioeconomic status, and health insurance coverage Access online resources including editable PowerPoint slides, video, and more Delve into the programs and initiatives designed to remedy inequalities in health and health care, including Healthy People 2020 updates Enjoy new coverage of health care reform, the "deaths of despair" (suicide, opioids, etc.), and the global primary care initiative End of chapter revision questions and other pedagogical features make this book a valuable learning tool for anyone studying at the advanced undergraduate or graduate levels. Additionally, it will prove useful in the field for medical professionals, social and community workers, and health educators in the public sphere.