Global One Health Index Report 2025 delivers the most comprehensive assessment of global One Health implementation, spanning 185 countries and territories. The open access book introduces an updated evaluation framework integrating governance, multisectoral actions, and outcome-based indicators, in alignment with the One Health Joint Plan of Action (2022–2026). Readers will find in-depth global comparisons, domain-specific analyses of zoonotic diseases, antimicrobial resistance, food security, and environmental integration, along with detailed country profiles. Offering evidence-based insights, this essential resource equips policymakers, researchers, and practitioners to identify implementation gaps and advance effective One Health strategies worldwide.

The editors of Global One Health Index Report 2025 are internationally recognized experts in One Health, global health, infectious disease prevention and control, and health system governance. The editorial team is led by Prof. Xiao-Nong Zhou, Prof. Xiaokui Guo, Assoc. Prof. Xiaoxi Zhang, and Asst. Prof. Lefei Han, who have extensive experience in developing global health assessment frameworks, conducting multidisciplinary research, and translating scientific evidence into policy action.

Prof. Xiao-Nong Zhou and Prof. Xiaokui Guo have made longstanding contributions to tropical medicine, infectious and parasitic disease prevention and control, and global health research, while Assoc. Prof. Xiaoxi Zhang and Asst. Prof. Lefei Han contribute expertise in health economics, health systems, and One Health governance. The editors have published extensively in leading international journals and have contributed to the development of the Global One Health Index as an evidence-based tool for evaluating and strengthening One Health implementation worldwide.