She specializes in U.S. history of sexuality and gender, the history of HIV/AIDS, and public history. She is the author of Infectious Ideas: U.S. Political Response to the AIDS Crisis (2009). She guest-edited and contributed to "HIV/AIDS in U.S. History: Interchange," in the Journal of American History (September 2017), the first feature-length piece on the subject to appear in the journal. She also coedited, with Jim Downs and Jennifer Morgan, Connexions: Histories of Race and Sex in North America (2016).