"This striking book asks provocative questions and seamlessly weaves together narratives central to the history of race, Asian Americans, urban politics, public health, and citizenship. . . . Using an array of sources and theoretical frameworks, Contagious Divides is an extremely important, original, and engaging book. It offers us a striking new vantage point from which to view racial formation, the role of the state, and public health in marking exclusion and inclusion in the United States."