Centering Africa as context and driver for Global Health Ethics: incompleteness, conviviality and the limits of Ubuntu: This article is based on the opening keynote address at the Oxford Global Health and Bioethics Conference, Oxford, June 2023.

Silences exist in global health ethics scholarship because of the particular caricatures of Africa that abound in the world, and these silences profoundly impact scholarship in this field. In this paper, I outline three such silences. The first concerns the consequences of representations of Africa as a place of theoretical scarcity, where the only theory seemingly worth mentioning is relational ontology. The second issue I highlight is the impact of dehumanization on global health and ethics. The third concerns the expectation that African science should serve the goal of development, which limits not only the scientific imagination but also the range of ethical questions that are engaged with. Finally, I turn to Francis Nyamnjoh's theory of incompleteness and conviviality to propose a shift in bioethics scholarship towards increased focus on the interconnections, encounters and mutual dependency of people and places elsewhere. Incompleteness requires epistemic humility and a curiosity about the views and experiences of others; conviviality is the predisposition required to allow for meaningful exchanges and mutual learning in global health ethics. As a theoretical framework, incompleteness and conviviality are part of a rich African intellectual tradition to help articulate opportunities for a transformative research agenda that helps us understand our world, and its crises, better.