Solidarity and the ethics of exposing others to risk in medical research.

The ethical justifiability of the invitation of others to participate in research and their deliberate exposure to risks of harm is not a common topic in bioethics. If, however, some offers ought not to be made and the corresponding actions ought not to be facilitated, invitations to, and the conduct of, a medical study involving humans needs justification. This paper addresses this issue by linking the search for medical knowledge with solidarity. The argument begins with the observation that scientific research is aimed at general knowledge, which is a necessary condition of the social value of research. The applicability of this knowledge to many makes it potentially a public good; that is, a good that is available freely to all. For knowledge to be a public good, a social decision to make it freely available to all needs to be made. It is proposed that this decision be grounded in society's, and so in both researchers' and potential research participants', commitment to solidarity and its obligations of provision, sharing, support, and loyalty. These obligations imply, among other things, an imperfect obligation to participate in research and the corresponding entitlement of the investigators to invite others to participate in research, and so to expose them to its risks during implementation. This entitlement is exercised in an environment shaped by the standards and protections of research ethics and the relevant institutional arrangements.