Saving the World From Bad Ideas

Bad Idea #48 "Vaccines are overrated" with Seth Berkley

Saving the World From Bad Ideas

Show Notes

Are vaccines overrated? In this episode of Saving the World from Bad Ideas, Mark Lynas speaks with Dr Seth Berkley, infectious disease epidemiologist, former CEO of Gavi, and co-founder of COVAX, about what the world got right and wrong during COVID-19. They discuss vaccine equity, pandemic preparedness, the politicisation of public health, and why the world remains dangerously vulnerable to future outbreaks. From the rapid development of mRNA vaccines to the rise of vaccine disinformation and the growing threat of H5N1 bird flu, this conversation is a sobering reminder that pandemics do not end just because societies stop wanting to talk about them. 🧠 Topics Discussed 🦠 Why societies so quickly try to forget pandemics, even when the threat has not fully passed

🔬 Whether the origin of COVID matters for future policy and lab safety

💉 How quickly the world developed COVID vaccines, and why that scientific achievement was extraordinary

🌍 Why COVAX was created, how it worked, and what it achieved

📦 The scale of vaccine nationalism and the human cost of hoarding

⚗️ How mRNA vaccines changed the speed and future of vaccine development

🧬 Why HIV remains one of the hardest viruses to vaccinate against

🐦 The pandemic potential of H5N1 bird flu and why it deserves more attention

📱 How social media, political polarisation, and public-health messaging failures fuelled vaccine hesitancy

🏛️ Why attacks on institutions such as WHO, CDC, and public science undermine future pandemic response

🚨 Why measles is resurging in countries that had once controlled it

🤝 Why global cooperation, advance funding, and trusted scientific institutions remain essential

👩‍🏫 Guest Bio Dr Seth Berkley is an infectious disease epidemiologist and Adjunct Professor at the Pandemic Center at Brown University. He served as CEO of Gavi, the Vaccine Alliance, from 2011 to 2023, and was one of the co-founders of COVAX, the global effort to ensure equitable access to COVID-19 vaccines. He previously led the International AIDS Vaccine Initiative and has spent decades working at the intersection of global health, vaccine access, and epidemic preparedness. He is the author of Fair Doses: An Insider’s Story of the Pandemic and the Global Fight for Vaccine Equity. 📚 Recommended Reading & Resources Fair Doses: An Insider’s Story of the Pandemic and the Global Fight for Vaccine Equity by Dr Seth Berkley

Gavi, the Vaccine Alliance

COVAX

CEPI (Coalition for Epidemic Preparedness Innovations)

WHO Pandemic Accord / pandemic treaty process

IAVI (International AIDS Vaccine Initiative)

💬 Quote Highlights 💬 “Vaccines are the most powerful public health technology [and] have led to the 40 year increase in life expectancy.” — Dr Seth Berkley 💬 “COVID isn’t over. We could have worse strains… and we need to learn the lessons from the previous one so we’re better prepared for the future one.” — Dr Seth Berkley 💬 “H5N1 is a really scary virus.” — Dr Seth Berkley 💬 “Outbreaks are inevitable, but pandemics are optional.” — Larry Brilliant, quoted by Dr Seth Berkley 💬 “The only thing that can protect us in a pandemic is science.” — Dr Seth Berkley 🌐 About WePlanet WePlanet is a growing international movement campaigning for science-based solutions to the climate, nature and development crises. Through this podcast and beyond, we challenge bad ideas that stand in the way of progress, and make the case for a more abundant, resilient and hopeful future. What lessons should the world have learned from COVID-19, and are we any better prepared for the next pandemic? Let us know what you think, and share this episode with someone interested in vaccines, global health, and the future of pandemic preparedness. Follow Saving the World from Bad Ideas for more conversations with scientists, writers and thinkers challenging the dogmas holding us back. 📥 Join the Conversation 💬 Email: [email protected]📩 Subscribe: weplanet.org/podcast👁️ Follow: @weplanetint

More from Saving the World From Bad Ideas

Oct 22, 2026

Episode summary In this episode of Saving the World from Bad Ideas, host Mark Lynas is joined by Professor Lonnie Thompson, an ice paleoclimatologist with The Byrd Polar and Climate Research Center at Ohio State University. In this episode, they discuss Lonnie’s legacy of over 50 years of strenuous expeditions traveling to tropical high mountain glaciers around the world, to take ice core samples that date back tens of thousands of years. Mark and Lonnie dive into the critical importance of these ice cores — some of which are the last remnants of mountain glaciers that have since melted away completely — as they hold records of greenhouse gases, temperatures, microbes and volcanic activity over Earth’s history that will continue to prove valuable to science for years to come. “Probably this year or next, those glaciers will totally disappear. And the only ice from that part of the world is here in the freezers at Ohio State University. From these ice cores, we can go back thirty, forty thousand years and see how that has varied in the natural world. The ice records anything that's in the atmosphere. And I can only imagine 20 years from now, there are things that we haven't even asked about, that will be important and only preserved in these frozen ice cores.” Watch the film Canary, a full-length documentary that dives into Lonnie Thompson’s legacy of work: https://canary.oscilloscope.net/

Oct 15, 2026

Episode summary In this episode of Saving the World from Bad Ideas, host Mark Lynas is joined by George Monbiot, columnist in The Guardian and environmental campaigner of worldwide renown, to discuss the return of bluefin tuna to British waters and the critical importance of protecting this wonderful marine megafauna from being exploited and killed by fishing. George isn’t just an academic expert — he tells Mark about his recent and ongoing exploits in a sea kayak, watching these incredible animals leap out of the water while chasing their prey. He and Mark then discuss how overfishing has depleted marine ecosystems around the United Kingdom and beyond and why the fishing industry escapes scrutiny while corporate lobbying and political inaction block meaningful change. “We have a very storybook view of the fishing industry, but it's actually rife with multimillionaires and billionaires running these enormous boats and huge corporations. It's very, very concentrated. It's utterly ruthless. It hides just like farming does. We have these radical double standards when it comes to fishing and farming,” says George.

Oct 8, 2026

Episode summary In this episode of Saving the World from Bad Ideas, host Mark Lynas is joined by Roger Hallam, climate campaigner and co-founder of Extinction Rebellion, to discuss his evolution in climate activism and the case for mass civil resistance. Roger reflects on the successes and failures of Extinction Rebellion, his various arrests and time in prison, and his subsequent international campaigns. Mark and Roger discuss Roger’s most recent and controversial “4 Billion Dead” campaign, discussing the role of science communication about climate impacts at high levels of global heating. Roger argues that our political systems are failing to respond at the scale and speed required, and advocates for civil resistance, citizens’ assemblies and even solar geoengineering as possible responses to the planet’s escalating climate crisis. “As a general rule, 99% of humans find courage through the community of collective action,” says Roger Hallam. “Then they radicalise through that experience and that can happen very quickly. As a general rule, if 3% of a population occupies a capital city for anything from 10 to 20 days, then you're rolling a dice on whether you get regime change or structural change in the regime. And we know that's what's necessary to slash carbon emissions at the present time.” Join ‘4 Billion Dead’ for monthly campaigning and organizing Zoom calls at this link → 4billiondead.org

Oct 1, 2026

Episode summary In this episode of Saving the World from Bad Ideas, host Mark Lynas is joined by Quico Toro, Director of Climate Repair at the Anthropocene Institute, to discuss his research on ocean-based carbon dioxide removal via phytoplankton. Quico challenges the idea that photosynthesis must only occur on land via reforestation, when 70% of our planet is ocean. He also discusses working with stakeholders in the South Pacific, like the Kingdom of Tonga, in collaborating with knowledge keepers and local ocean ecosystem experts to address concerns about carbon removal and approach the practice thoughtfully, scientifically and responsibly. “To me, the obvious answer to carbon removal is photosynthesis. The forestry people had it right in the first place: photosynthesis is great. It's had a billion and a half years to develop through research and development and evolution. Oceanographers have been thinking for many years that a logical way to approach this problem would be to increase carbon dioxide removal by increasing phytoplankton concentrations in the center of the ocean.”

Sep 24, 2026

Episode summary In this inaugural episode of Saving the World from Bad Ideas Season 4, host Mark Lynas is joined by scientist Joshua Elliott, director of Advanced Research for Climate Emergencies (ARC) and chief scientist at Renaissance Philanthropy, to discuss Earth's tipping points and rapidly changing climate systems — and how human intervention, via approaches like climate stabilization, is a fast becoming a moral imperative to combat the worst projections of climate breakdown. “We have been geoengineering this planet since we first developed agriculture,” says Joshua Elliott. “The tacit belief that accidental geoengineering is somehow okay, but that thoughtful, science-driven, purposeful, researched and scaled geoengineering or stabilization is somehow a horrible moral hazard. I mean, to me, that just completely defies logic.”

See all episodes →