Macron Defies Global Trend by Hosting One Health Summit in Lyon, Signaling Renewed Leadership in Global Health Equity

When France’s President Emmanuel Macron opened the One Health Summit in Lyon last week, the global conversation about interconnected health systems felt suddenly more urgent. The summit, held from April 5 to 7, brought together heads of state, scientists, and civil society to confront how human, animal, plant, and ecosystem health are inextricably linked—a concept gaining traction as vector-borne diseases like dengue and chikungunya spread, antimicrobial resistance grows, and plastic pollution infiltrates food chains. While the summit yielded pledges without binding commitments, its emphasis on prevention over cure resonated far beyond Lyon’s Rhône riverbanks, touching communities thousands of miles away where similar tensions between global ideals and local realities play out daily.

Take Seattle, Washington—a city where the Puget Sound’s health mirrors the wellbeing of its residents. Just as the One Health Summit highlighted plastic pollution as a cross-cutting threat, Seattle’s own waterways face mounting pressure from microplastics originating in urban runoff, a concern studied for years by researchers at the University of Washington’s School of Oceanography. The city’s longstanding investment in green stormwater infrastructure, managed by Seattle Public Utilities, attempts to filter contaminants before they reach salmon habitats—a direct echo of the summit’s call to protect ecosystem health as a foundation for human wellbeing. Yet, as Macron noted amid “wars, divisions, and declining contributions,” even progressive cities struggle to scale prevention when funding fluctuates and political will wavers, leaving grassroots organizations to fill gaps left by retreating international cooperation.

The summit’s focus on antimicrobial resistance (AMR) also finds unsettling parallels in King County, where public health officials have tracked rising resistance in common bacteria like E. Coli for over a decade. Programs at Harborview Medical Center’s Antimicrobial Stewardship Program work to preserve antibiotic effectiveness through clinician education and rapid diagnostics—efforts aligned with the summit’s plea to combat AMR through coordinated action. Still, without the sustained global coordination Macron urged—especially as declining contributions to bodies like Gavi, the Vaccine Alliance (noted in the summit’s scientific symposium recommendations) threaten vaccine access—local successes remain vulnerable to transnational threats like drug-resistant tuberculosis or foodborne outbreaks linked to industrial farming practices hundreds of miles away.

Beyond clinical settings, the summit’s emphasis on sustainable food systems strikes a chord in Seattle’s vibrant urban agriculture scene. Organizations like Seattle Tilth, which has promoted ecological farming practices since the 1970s, embody the “prevention today rather than cure tomorrow” ethos Macron highlighted in his opening remarks. Their work transforming vacant lots into productive gardens not only improves food access in food-insecure neighborhoods like South Park but also reduces reliance on industrial supply chains vulnerable to the very disruptions—climate shocks, supply chain fractures, pollution—that the One Health framework seeks to mitigate. Yet, as the summit conceded despite its enthusiasm, translating such local innovation into broader policy requires overcoming the “international situation that is splitting that coordination apart,” a challenge evident when city-level initiatives lack state or federal backing to scale.

Given my background in environmental epidemiology, if this trend impacts you in Seattle, here are the three types of local professionals you need to connect with—not as distant experts, but as neighbors navigating these interconnected challenges alongside you:

• Planetary Health Clinicians: Look for providers at institutions like UW Medicine or Kaiser Permanente who explicitly integrate environmental history into patient assessments—asking about workplace exposures, home water quality, or access to green space—not just treating symptoms but identifying root causes tied to ecosystem changes. They should collaborate with toxicologists or ecologists, reflecting the summit’s call for interdisciplinary science.
• Urban Resilience Planners: Seek professionals affiliated with Seattle’s Office of Planning and Community Development or firms like GGLO who design infrastructure with dual benefits—say, bioswales that manage stormwater while creating pollinator habitats—prioritizing projects evaluated through health equity lenses, especially in neighborhoods disproportionately affected by heat islands or legacy pollution.
• Community-Based One Health Coordinators: These aren’t always formal titles; they might be veterinarians partnering with public health clinics on zoonotic disease surveillance (like tracking rabies in urban wildlife) or urban farmers working with food banks to distribute hyperlocal produce while monitoring soil health—individuals bridging sectors in ways that mirror the summit’s multi-stakeholder ideal, grounded in neighborhood trust rather than top-down mandates.

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