Reviewed by: Necropolis: Disease, Power, and Capitalism in the Cotton Kingdom by Kathryn Olivarius Savannah L. Williamson (bio) Necropolis: Disease, Power, and Capitalism in the Cotton Kingdom. By Kathryn Olivarius. (Cambridge: Belknap Press, 2022. Pp. 352. $35.00 cloth; $19.25 ebook) Approximately every two to three years during much of the nineteenth century, yellow fever epidemics terrorized the city of New Orleans. Without a clear understanding of the disease, the only sure way a person was protected from future yellow fever outbreaks was to survive infection. Once an individual was acclimated, they were no longer a stranger to the city and used their immunity as a source of social, economic, and political status, which Olivarius terms "immunocapital." This bio-social currency, which was denied to Black survivors of the disease, allowed the white residents of New Orleans to enter and strengthen the city's strict racial hierarchy and exacerbated inequality in an already violent and rigid slave society. Throughout the tropical Atlantic, Aedes aegypti mosquitoes—which thrive in tropical and subtropical climates—carried the viral disease and transmitted the infection to humans through a bite. The disease presents with fever, chills, body aches, nausea, headaches, appetite loss, abdominal and back pain, black vomit, and kidney and liver damage that can cause the skin to appear yellow—hence the name "yellow fever." In antebellum New Orleans, roughly half of those infected (or 8 percent of the population) died from an outbreak. By the end of the nineteenth century, yellow fever epidemics were responsible for as many as 150,000 deaths in the Crescent City. Rather than invest in public health initiatives, white elites profited from the chaos and instability caused by yellow fever outbreaks. Epidemics of malaria, yellow, and bilious fevers have often been called "great equalizers" because they undermine the privileges afforded to whiteness, making all demographics equal in the face of possible death. Olivarius argues that yellow fever epidemics did not weaken or dismantle the existing hierarchies of race and class. Instead, antebellum New Orleans became increasingly stratified between whites with immunity, whites who were not acclimated to the disease, and [End Page 78] free and enslaved Black populations. Surviving yellow fever was practically a requirement for white citizens hoping to enter elite society. For those with immunity, outbreaks were a source of economic opportunity to which white people felt entitled, since they viewed their survival as evidence of racial superiority. They monopolized on the fear, chaos, and instability caused by outbreaks to consolidate their power and wealth at the top of the cotton market, enact policies that furthered systematic inequality, enhance white supremacy, undercut the majority population, and weave epidemiological discrimination into law. Whereas immunity for white individuals provided prospects and social standing, "immunocapital" did not extend to Black individuals. Although they were protected from future yellow fever infections, their immunity provided social and economic opportunity to their white owners, rather than themselves. Antebellum whites argued, falsely, that Blacks were naturally immune to yellow fever infections to justify policies and laws that promoted slavery, racial and class inequality, and white supremacy. Necropolis provides a detailed and fascinating account of why so many unacclimated strangers died of yellow fever in nineteenthcentury New Orleans. Unlike other epidemics, which acted as socioeconomic equalizers, outbreaks of yellow fever, bilious fever, and malaria made for greater inequality. These diseases did not undermine existing hierarchies of class and race but served as the very foundation of such hierarchical structures. As yellow fever epidemics occurred more frequently throughout the nineteenth century, they contributed to greater racial and class stratification between "acclimated" whites with immunity, "unacclimated" strangers, and free and enslaved Blacks whose immune status provided social, economic, and political benefits to others, rather than themselves. "Immunocapitalism," therefore, highlights the ways in which antebellum political, economic, social, environmental, and immunological forces contributed to greater mortality and inequality in the Crescent City. [End Page 79] Savannah L. Williamson SAVANNAH L. WILLIAMSON is a historian at Sul Ross State University. Copyright © 2022 Kentucky Historical Society