This paper suggests that public health, due to its community orientation, may be ignoring certain ethical principles--namely the rights of individuals and communities to self-determination. The expectation of individual rights as a member of a community is reviewed and the additional right of a community for self-determination is proposed. The influences on ethical evaluations by the legal and economic environments are suggested, using US examples. The conclusion argues that as the focus of health-care delivery changes, it will become more important (...) to consider these questions of group ethics. (shrink)