Alexandria Herrera is a fourth-year dual-title Ph.D. Student in Latin American History and Women’s, Gender, and Sexuality Studies. Alex is currently working on her doctoral dissertation. The project examines how transnational networks of Guatemalan, American, and European doctors, public health officials, politicians, city police, and sex workers created and shaped prostitution regulations and medical knowledge about sexually transmitted infections in 19th and 20th century Guatemala City. The project focuses on the medical and public health justifications for policing sex workers’ bodies for STIs, particularly syphilis, from 1890 to 1940.