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GLOBAL HEALTH · G7 FRANCE
One Health Summit Lyon 2026: WHO and G7 France Unite Science Against Pandemic Threats
From April 5 to 7, 2026, scientists from more than 80 countries gathered in Lyon under France's G7 Presidency. The One Health Summit coincided with World Health Day and opened a year-long campaign titled Together for Health. Stand with Science.
Published: April 7, 2026 Lyon, France 80+ countries
Key Takeaways
- 1The Lyon summit (April 5-7, 2026) is France's first major G7 health science event.
- 2More than 80 countries joined the WHO Collaborating Centres network — the largest scientific gathering around a UN health agency.
- 3The Stand with Science theme responds to global science skepticism and disinformation.
- 4Three One Health pillars: human, animal and environmental health as a single system.
- 5Action priorities: pandemic prevention, antimicrobial resistance and the climate-health nexus.
What is One Health? Three pillars, one system
One Health treats human, animal and environmental health as three faces of the same problem. When a forest is cleared, a bat-borne virus may reach livestock and then the farmer handling them. When antibiotics are overused in aquaculture, resistance genes wash into the sea and return to the dinner plate.
The WHO, the World Organisation for Animal Health (WOAH), the UN Food and Agriculture Organization (FAO) and the UN Environment Programme (UNEP) have signed a joint One Health plan of action. The Lyon summit is where WHO Collaborating Centres translated that framework into measurable data, funding and reporting commitments.
→ For readers: each H5N1 bird flu outbreak in Southeast Asia is a live test of the One Health framework — if the system works, veterinarians flag the alarm before hospitals do.
Human
Animal
Environment
One Health
Three days in Lyon: program and decisions
Sun, Apr 6
Technical science sessions
WHO Collaborating Centres presented data on antimicrobial resistance, pathogen genomic surveillance, and the climate-health nexus.
Mon, Apr 7
World Health Day
Official launch of the Stand with Science campaign alongside a joint declaration calling for pandemic preparedness investment and early detection.
→ The Global Forum of WHO Collaborating Centres (April 7-9) overlaps the summit, producing the densest three days on the 2026 international health calendar.
80+ countries, one mission
The network of more than 850 WHO Collaborating Centres stretches from labs in Nairobi to virology institutes in Tokyo. In Lyon, more than 80 countries sent delegates — a scale WHO described as the largest scientific network ever convened around a UN agency.
These centres don't only research: they run the Global Influenza Surveillance and Response System (GISRS), the measles-rubella network, and biobanks that share pathogen samples. When a new virus emerges, these centres are the first to ship sequencing data to WHO within hours.
“To stand with science is not to stand with an opinion — it is to stand with the method that produces evidence.”
Antimicrobial resistance
The silent pandemic
Antimicrobial resistance is estimated to be associated with millions of deaths per year, according to analyses published in The Lancet. Lyon called for a global stewardship registry and incentives to revive antibiotic development — a field private investors have abandoned due to low returns.
Climate-health nexus
Warming world, wider outbreaks
Aedes mosquitoes have expanded their range with rising temperatures, bringing dengue and chikungunya to previously temperate zones. Lyon delegates proposed integrating climate maps into early-warning outbreak systems — something only a handful of countries currently do.
Vietnam and Southeast Asia: why Lyon matters
Southeast Asia sits on one of the world's busiest zoonotic corridors. High livestock density, live poultry markets and climate pressure keep the region on WHO's red list for avian influenza and unnamed emerging diseases.
Vietnam has participated in a national One Health framework since 2016, coordinated across the Ministries of Health, Agriculture and Environment. Lyon's commitments on genomic data sharing and surveillance funding could open new regional projects — especially in border provinces where cross-border poultry trade is hard to police.
→ For a household raising chickens in the Mekong Delta, a working One Health system means the village vet flags an outbreak before your relatives end up in hospital.
Related reading on ZestLab
References
- WHO — World Health Day 2026: Together for Health — 2026-04-07
- WHO — One Health Summit Call to Action — 2026-04-06
- WHO — World Health Day Event Detail — 2026-04-07
- WHO — One Health topic page
Frequently asked questions
science·one health summit lyon 2026 · world health day 2026 · WHO G7 France · pandemic prevention science
Related Topics
one health summit lyon 2026world health day 2026WHO G7 Francepandemic prevention scienceone health approachstand with science WHOglobal health summit april 2026
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