[Impure blood: specialists, institutions, and cultural authority in the context of AIDS in Brazil].

In this article, we examine the concept of cultural authority in the context of the professionalization/corporatization of medicine at the end of the 20th century, and its political and moral contours since the HIV/AIDS epidemic in São Paulo. Based on journalistic articles collected from the newspaper O Estado de São Paulo (1986-1989), we seek to highlight the place of medical expertise, examining the discourses produced about the disease in Brazil, in bases that show the emergence of social actors, disputes for credibility and the clinical authority under challenge. We analyze public narratives about AIDS, situating the place of authority. We argue that such discourses, in the context of sexual panic, did not occur outside a dynamic of therapeutic/clinical authority and the profession's own norms, which also immediately made visible the role of physicians, specialists and other health professionals, in dialogue with the moral grammar of the socially current illness. The conclusions illustrate the link between Brazilian medicine at the end of the century and the local-global history of AIDS, concentrating historical and political movements that disputed the scientific and moral meanings of the disease, fractured by the clash between authorities in the scientific, sanitary and clinical fields.