The COVID-19 pandemic laid bare the racial health disparities in the United States, with markedly increased mortality especially among Blacks and Native Americans. In this episode, Tony Breu and I discuss the conception of race, racism, and the social determinants of health through three historic plagues in the United States -- from yellow fever in New Orleans, to poliomyelitis, and finally the early days of HIV/AIDS -- and what lessons we can draw for COVID-19.