Includes bibliographical references (pages 183-194) and index.
Setting a scene -- A brief and partial history of randomized controlled trials (RCTs) in the context of hiv prevention and treatment -- Theory and event : approaching the study of PrEP -- The gold standard : the complex singularity of PrEP, RCT and bioethics -- PrEPs, multiplicity and the qualification of knowledge and ethics -- On some topologies of PrEP -- Conclusion : eventuating the methodology of trials