Chapter 1, “‘We Are Not Immune’: A New Branch of the Feminist Women’s Health Movement,” begins by describing the emergence of a new coalition of feminists who turned their attention to the HIV epidemic in an attempt to understand how the virus would impact women. Together they realized that HIV was killing women more often than the those in charge of the AIDS response acknowledged. The failure to recognize and respond to issues facing women with HIV was due, in part, to the Centers for Disease Control and Prevention definition of AIDS that did not include gynecological infections. The incomplete definition of AIDS resulted in a lack of data on women with HIV and impacted the Social Security Administration’s determinations of who should receive benefits. Allying with lawyers and fellow activists, feminists set out to challenge the law and science of the epidemic.