Abstract   While rights and freedoms of sexual citizenship have been foregrounded in geography, vaguer attention has been given to questions of political obligation. Feminist work on political obligation, grounded with a framing in political ecology of disease, however, provides a means to correct this neglect. Empirically, I narrate a story of local public health politics in Seattle, WA. There, a cultural panic played out in the media over the alleged failure of political obligations by gay men around sexually transmitted infections. Political obligation and ecology usefully extend the concept sexual citizenship on its own terms by moving beyond a rights-versus-obligation polarity, highlighting the biophysical realities of sex, recognizing the spaces in which sex occurs, and noting the social relations inherent in sex and sexuality. Thus, this paper contributes to deeper thinking for activists involved in working through these questions as well as bolstering the notion of sexual citizenship in political geography.