This study analyses the performance of GOH-IDI from multiple organisations from a multidisciplinary perspective to provide the first objective assessment of 146 countries worldwide on the three dimensions of One Health performance. The primary indicators of human health, environmental health and animal health are equally weighted, reflecting the One Health philosophy's emphasis on animal health and ecology. This study is based on an authoritative database and optimised by expert consultation and scientific algorithms.
The significant difference between the maximum and minimum values in human health may be linked to the current global economic inequalities. Countries such as Norway, Singapore, Switzerland, Iceland, and Australia have the best performance at the indicator level, indicating that these countries have a better overall governance level and more abundant essential ecological land resources. Namibia, Liberia, the Central African Republic, Cote d'Ivoire, Chad, and other countries have poor performance, and there is still much room for improvement. These countries have something in common, all belong to SSA and have poor objective local conditions(Fig. 3). A combination of many negative factors led to this situation, including geopolitical and geographic resource limitations. In Animal Nutritional, North America scored high, probably due to its advanced intensive production model. In addition, we notice that the air quality in the Middle East & North Africa and South Asia is slightly worse than in the other regions.
This study shows that GOH-IDI is statistically correlated with economic performance (GNI per capita). HICs countries are more probably to have higher scores in Human Health. LICs countries performed poorly in Reproductive, Maternal, Newborn and Child Health. However, HICs countries performed worse in terms of Health Risk and Non-communicate Disease and Health risk. LICS countries performed worse in Hazardous Chemicals, Reproductive, maternal, newborn and child health and Animal nutritional status. Those indicator is dependent on national policies and complete industrialisation systems. Five indicators are not statistically different between regions at each economic level, including Animal epidemic disease, Animal biodiversity, Air quality and climate change, Land resources and Environmental biodiversity. Economic development may not be effective in improving the performance of these indicators. At this stage, economic development may not be effective in enhancing the performance of these indicators, or these indicators are not the focus of national policy at the moment. These indicators may require global policy guidance and concerted efforts to improve climate change and air quality.
Countries in the same World Bank income groups have similar economic and development statuses. Countries with high GOH-IDI scores in each group could function as a model. However, it is difficult to see the characteristics of these countries from the data only, and an in-depth understanding of their governance systems is needed. Based on the three-level data, the strengths and weaknesses of each country could be analysed.
(1) Niger has the best GOH-IDI performance in LICs. Niger's great performance may be attributed to its three well-performing second-level indicators, including Non-communicable Diseases and Mental Health, Health Risk, and Land Resources(Fig. 1). Niger focuses on health policies at the national level[18], has a pilot study based on One Health and values the positive effect of systematic research on policy development[19,20]. The specificity of Niger's performance in GOH-IDI deserves more research analysis and discussion. (2) Uzbekistan has the best GOH-IDI performance in LMICs. Uzbekistan's overall performance in Human Health and Animal Health was great, especially for the three second-level indicators, including Infectious Diseases, Animal Welfare, Relevant Regulations and Policy Support, and Animal Nutritional Status(Fig. 1). Since 1991, Uzbekistan has implemented several major healthcare innovations to improve the efficiency of healthcare services, including healthcare availability, governance and financing, and to ensure equitable access to healthcare resources[21]. (3) Jordan has the best GOH-IDI performance in UMICs. Jordan's overall performance was more balanced, with five well-performing second-level, including Infectious Diseases, Non-communicable Diseases and Mental Health, Universal Health Coverage and Health Systems, Animal Biodiversity, and Animal Nutritional Status. Jordan has conducted a lot of research and practice on several components of the One Health philosophy, such as antibiotic resistance, human-animal diseases and climate warming[22–24]. (4)Norway has the best GOH-IDI performance in HICs. Norway performs well in most indicators, with only three that need improvement, including Non-communicable Diseases and Mental Health, Health Risk, and Land Resources(Fig. 1). Norway attaches importance to applying and promoting the One Health concept and economic development[25,26]. Norway values cross-disciplinary development and introduces the latest technology in practice to aid in the effectiveness of interventions[27].
Policy recommendations:
After analysing and assessing the global performance of GOH-IDI and its relationship with regional economic development level, the following recommendations might be considered for policy-making in this field.
(1) International organisations are needed to take the lead in establishing a global governance paradigm and changing the governance strategies of countries around the globe. Some indicators do not differ significantly between income groups globally(Fig. 7). These indicators are challenging to improve effectiveness through direct economic inputs, and the efforts of individual countries are limited.
(2) Increase international and regional cooperation to achieve a win-win situation. Regional differences are apparent, with countries such as Niger, Uzbekistan, Jordan and Norway being among the top performers in each income group (Fig. 5). The governance paradigms of these countries are valuable for their peers to learn from. In a time of globalisation, complementing each other's strengths, strengthening regional multilateral cooperation, and engaging in more international cooperation will be a paradigm for improving the One Health index in the future. As countries and international organisations around the world join One Health-related initiatives and actions, the gaps between countries and regions will narrow and further improve together.
(3) Global animal-related databases need increased diversity and data reliability. There are still relatively few animal-related databases(Table 1). Strengthening basic testing facilities and teams is necessary, and reliable data sources combined with professional analysis teams to generate realistic policy recommendations.
(4) Strengthening the multilateral consensus and framework for action related to global climate change is necessary. Global climate change is still a big problem. The countries that emit the most greenhouse gases are not necessarily the most affected ones. Climate change has the most significant impact on tropical regions, especially in SSA. Many of the less developed regions in the tropics suffer from extreme climate impacts while needing to fight poverty-induced malnutrition and numerous socioeconomic problems.
(5) Combining the One Health concept to develop cross-disciplinary research and practice for efficient and universal policy development. Single discipline and departmental efforts is no longer sufficient to address the current complex international health challenges. The One Health concept guides a multidimensional view of problems. One Health research is directed at three main levels at this stage, including research, implementation, and governance. Areas worthy of future enhancement include drug resistance traceability, food safety, and climate change. Technical tools worthy of research include early warning systems, One Health strategic policy research, biosafety protection, One Health communication and mass behaviour, big data analytics, artificial intelligence, and cloud computing technology applications.
In the process of this study, we noticed that many environmental health and animal health datasets do not have time series and lack the possibility of multidimensional assessment. However, according to our observation, the attention to data is increasing in all world regions. In addition, there are more than 250 countries and regions in the world, and only 146 were included in this study. We will update the existing dataset and integrate a multilingual dataset in a future release.