[Solidarity : new paradigm for health data spaces?]

At the intersection of health promotion and health data sharing, a normative paradigm is emerging: solidarity. This principle became evident with the European Commission's proposal for the European Health Data Space in 2022, approved by the European Parliament in 2024, and Switzerland's DigiSanté project. This article examines health data spaces beyond traditional legal considerations, exploring the implications of increased reliance on solidarity. Highlighting public and private actors, it analyzes the use of health data for research, health surveillance, and profit. The article emphasizes the need for robust frameworks to balance data use for the common good and mitigate the risks of repression and exploitation.