For years, the global health community has spoken about “One Health” as a theoretical framework—a recognition that the wellbeing of humans, animals, and our shared environment are inextricably linked. Still, as a physician who spent over a decade in internal medicine before transitioning to health journalism, I know that recognition is not the same as resolution. The gap between a scientific vision and a functioning public health response is where the greatest risks reside.
That gap narrowed significantly this week. On World Health Day, global leaders, scientists, and policymakers converged in Lyon, France, for a milestone One Health Summit held from April 5 to 7, 2026. The gathering was not merely a symbolic meeting; it served as the launchpad for a series of high-impact initiatives designed to shift the One Health vision to action, moving beyond policy papers and into concrete, multisectoral implementation.
The urgency driving this shift is backed by sobering data. According to the World Health Organization (WHO), approximately 60% of known infectious diseases in humans originate in animals, and roughly 75% of emerging infectious diseases are zoonotic . The catastrophic scale of this interdependence was laid bare by the COVID-19 pandemic, which resulted in an estimated 15 million deaths and caused trillions of dollars in global economic losses between 2020 and 2021 .
Under the 2026 World Health Day theme, “Together for health. Stand with science,” the summit emphasized that we cannot protect human health in a vacuum. Climate change, biodiversity loss, water contamination, and environmental degradation are not just ecological concerns; they are primary drivers of the next pandemic. By integrating expertise across agriculture, science, and the environment, the WHO and its partners aim to detect risks earlier and respond with a speed that was missing in previous crises.
The Science of Interconnectedness: Why One Health Matters Now
To the layperson, “One Health” might sound like a buzzword, but in clinical and epidemiological terms, it is a necessity. The approach recognizes that the health of people, animals, and the environment are interwoven. When we destroy forests or engage in unsafe food practices, we disrupt the natural barriers that keep zoonotic reservoirs—animals that carry pathogens—separate from human populations.
President Emmanuel Macron, hosting the event as a flagship of the G7 French Presidency, underscored this systemic reality. He noted that One Health is about recognizing that we live as one system where the wellbeing of humans, animals, and the environment is inseparable. The French government’s goal is to move this approach from “ambition to implementation,” ensuring that science guides every action to prevent the next crisis before it begins.
This systemic failure is evident in the rise of antimicrobial resistance (AMR), sustainable food system collapses, and the increasing frequency of zoonotic spillovers. The summit in Lyon focused specifically on these drivers, highlighting that coordinated, science-based approaches are the only way to address threats that cross species, and borders.
Four High-Impact Initiatives to Secure Global Health
The core of the summit was the announcement of four specific, measurable actions led by the WHO and its partners. These initiatives are designed to translate high-level political commitment into on-the-ground protection.
1. A New Global Network of One Health Institutions
The WHO, alongside the “Quadripartite” partners—the Food and Agriculture Organization (FAO), the United Nations Environment Programme (UNEP), and the World Organisation for Animal Health (WOAH)—is launching a Global Network of One Health Institutions. This network is designed to operationalize the One Health Joint Plan of Action by mobilizing multidisciplinary expertise.
The goal is to move global guidance into practical, country-focused tools. By leveraging the WHO Academy and other specialized institutions, the network will provide training and peer learning to help individual nations build their own One Health delivery models, ensuring that a village health worker and a veterinarian are working from the same playbook.
2. Expanding the Scientific Foundation (OHHLEP)
Science cannot be a static resource; it must evolve with the threats. To this end, the WHO and Quadripartite partners announced the extension and expansion of the One Health High-Level Expert Panel (OHHLEP). This body serves as the world’s leading scientific advisory group on the subject.
The mandate for OHHLEP has been extended through 2027, with a subsequent phase planned for 2027–2029. The panel will focus on three priority areas: shaping the global research agenda, supporting the Joint Plan of Action, and driving science-based advocacy to ensure that political decisions are grounded in evidence rather than expediency.
3. The 2030 Push to Eliminate Rabies
One of the most tangible examples of the One Health approach is the renewed initiative to eliminate dog-mediated human rabies deaths by 2030. Rabies remains a devastating disease that kills nearly 60,000 people every year, many of whom are children .
Launched in collaboration with the World Organisation for Animal Health and the Institut Pasteur, this initiative is led by endemic countries. By focusing on community-based surveillance and animal vaccination, the program uses rabies elimination as a scalable model for broader One Health surveillance systems, proving that animal health interventions can directly save human lives.
4. A Unified Strategy for Avian Influenza
To combat the fragmented response to avian influenza, the WHO and Quadripartite partners presented a new Strategic Framework for Collaboration. This framework replaces siloed actions with a unified strategy that covers surveillance, risk assessment, and response.
This approach addresses the “wider impacts” of avian influenza, acknowledging that the virus doesn’t just threaten public health—it jeopardizes food security, livelihoods, and biodiversity. By coordinating across sectors, countries can better manage the interface between wild birds, poultry, and humans.
A New Era of Coordination: WHO Leads the Quadripartite
A significant institutional shift occurred concurrently with the summit. As of April 8, 2026, the WHO has assumed the Chairmanship of the Quadripartite collaboration . This gives the WHO an enhanced leadership role in coordinating global action alongside the FAO, WOAH, and UNEP.
Under this new leadership, the partnership will prioritize “measurable impact at the country level.” This means a shift away from high-level diplomacy and toward streamlining governance and aligning efforts around a focused set of priorities. The goal is to ensure that the Quadripartite’s norm-setting and evidence generation actually result in more resilient and equitable health systems on the ground.
Bridging the Gap: The Global Forum of Collaborating Centres
Running alongside the main summit, the WHO kicked off its first Global Forum of WHO Collaborating Centres from April 7 to 9, 2026. This forum brought together high-level representatives, including the Minister of Health of France and health ministers from Germany, Indonesia, and South Africa, as well as the Vice-Minister of Health of Japan.
The forum convened more than 800 WHO Collaborating Centres (CCs) representing over 80 countries. These centers are the engines of scientific innovation; by deepening the collaboration between these academic and research institutions, the WHO aims to accelerate data sharing and capacity-building. This ensure that when a new pathogen is detected in a remote region, the scientific community has the established channels to share that data and develop a response in real-time.
| Initiative | Primary Goal | Key Partners |
|---|---|---|
| Global Network of One Health Institutions | Translate global guidance into practical, country-level tools | WHO, FAO, UNEP, WOAH |
| OHHLEP Expansion | Scientific advisory and research agenda through 2029 | WHO & Quadripartite |
| Rabies Elimination 2030 | End dog-mediated human rabies deaths | WHO, WOAH, Institut Pasteur |
| Avian Influenza Framework | Unified surveillance and response strategy | WHO & Quadripartite |
The overarching message from Lyon is clear: the era of treating human health as a separate entity from the environment is over. As Dr. Tedros Adhanom Ghebreyesus, Director-General of WHO, stated, we cannot protect one without protecting all three—people, animals, and the environment. The transition from “vision” to “action” is not just a policy preference; it is a survival strategy for a planet facing unprecedented ecological and biological pressures.
The outcomes of the One Health Summit will now inform ongoing international discussions, including the G7, focusing on preparedness and coordinated responses at the human-animal-ecosystem interface.
Next Checkpoint: The WHO and Quadripartite partners are expected to provide the first progress reports on the implementation of the Global Network of One Health Institutions and the updated OHHLEP research agenda in the coming months.
Do you believe global health systems are moving fast enough to integrate environmental health into pandemic prevention? Share your thoughts in the comments below or share this analysis with your network.