Madeleine Thomson: Building a Career at the Intersection of Climate Science and Global Health

In the humid landscapes of The Gambia, a young field entomologist named Madeleine Thomson was learning lessons that would shape decades of groundbreaking climate-health research. Armed with her newly minted PhD from the University of Liverpool, she was knee-deep in operational research supporting the country’s national impregnated bednet programme—work that placed her at the frontlines of one of Africa’s most pressing public health challenges. Little did she know that those early encounters with mosquitoes and malaria would evolve into a distinguished career at the intersection of climate science and global health.

Today, Dr. Thomson stands as one of the world’s leading voices on climate-sensitive health interventions, serving as Head of Impacts and Adaptation at Wellcome, one of the world’s largest health research foundations. Her journey from field researcher to global health leader represents not just personal evolution, but the maturation of an entire scientific discipline that increasingly recognizes climate change as one of the most significant health threats of our time.

Foundations in the Field

Thomson’s scientific foundation was built on solid academic ground, with degrees from some of Britain’s most respected institutions. Her Bachelor of Science from the University of Sheffield provided the initial framework, followed by a Master’s degree from Imperial College London—an institution renowned for its rigorous approach to scientific inquiry. But it was her doctoral work at the University of Liverpool that truly set the stage for her future contributions to global health.

The transition from academic study to field research in Africa marked a pivotal moment in her career trajectory. Working on large-scale health interventions like The Gambia’s bednet programme gave Thomson firsthand experience with the complex realities of implementing public health solutions in resource-constrained environments. This wasn’t theoretical research conducted in sterile laboratory conditions—it was science with immediate, life-or-death implications for communities across Africa.

This early fieldwork proved invaluable in shaping her understanding of how environmental factors influence disease transmission. Observing the intricate relationships between climate patterns, mosquito behavior, and malaria outbreaks in real-world settings provided insights that would prove crucial as her research evolved to address broader climate-health connections.

The Columbia Years: Building Expertise

Thomson’s move to Columbia University’s International Research Institute for Climate and Society marked a significant elevation in both the scope and scale of her work. As a Senior Research Scientist, she found herself at one of the world’s premier institutions for climate research, surrounded by experts who were pushing the boundaries of understanding how climate systems affect human societies.

Her role at Columbia expanded beyond traditional entomological research to encompass the development of new data, methodologies, and tools for improving climate-sensitive health interventions. This period saw her research broaden to include not just infectious diseases, but also the public health outcomes of hydrometeorological disasters and nutrition—a holistic approach that reflected the interconnected nature of climate and health challenges.

The pinnacle of her Columbia career came with her appointment as Director of the WHO Collaborating Centre on ‘Malaria Early Warning Systems and other Climate Sensitive Diseases.’ This position placed her at the center of international efforts to use climate science for disease prevention and control. The WHO Collaborating Centre designation is reserved for institutions that meet the organization’s highest standards for technical expertise and scientific excellence, reflecting Thomson’s emergence as a global authority in her field.

Her work during this period involved developing early warning systems that could predict disease outbreaks based on climate patterns—revolutionary tools that could help health authorities prepare for and prevent epidemics before they began. This wasn’t just about malaria; her team’s work extended to other climate-sensitive diseases including meningococcal meningitis and Zika virus, demonstrating the broad applicability of climate-informed approaches to disease control.

Leadership and Global Influence

Thomson’s appointment as co-chair of Columbia’s cross-university working group on global health security further established her as a leader capable of bridging different disciplines and institutions. This role required not just scientific expertise, but the ability to coordinate complex, multi-stakeholder initiatives—skills that would prove essential in her later work at Wellcome.

Her concurrent appointment as Senior Research Scholar at Columbia’s Mailman School of Public Health positioned her within the Department of Environmental Health Sciences, where she could further explore the connections between environmental factors and human health. This academic affiliation provided the intellectual framework for her evolving understanding of climate change as a fundamental health issue.

Throughout her Columbia years, Thomson maintained active collaborations with international organizations and research institutions. Her founding membership in the Meningitis Environmental Risk Information Technologies (MERIT) research consortium and her role as Vice-President of the Health and Climate Foundation demonstrated her commitment to building the collaborative networks necessary to address global health challenges.

The Wellcome Transition

Thomson’s transition to Wellcome represents the culmination of her career evolution from field researcher to global health strategist. Initially serving as Special Adviser on Environment, Nutrition & Health, she eventually assumed the role of Head of Impacts and Adaptation—a position that places her at the center of one of the world’s most influential health research foundations.

Wellcome’s mission as a politically and financially independent foundation supporting science to solve urgent health challenges aligns perfectly with Thomson’s career-long focus on translating scientific knowledge into practical health interventions. Her current role involves leading work on climate-sensitive health interventions in low- and middle-income countries, bringing her career full circle to the communities where she first witnessed the intersection of climate and health.

Her continued appointment as Visiting Professor at Lancaster University Medical School ensures that her work remains grounded in rigorous academic research while maintaining the practical focus that has characterized her entire career. This dual role exemplifies the modern approach to global health research, where academic excellence must be coupled with real-world impact.

A Legacy in Motion

With over 25 years of research experience, Thomson’s journey from field entomologist to global health leader reflects broader changes in how we understand and address health challenges in an era of climate change. Her career trajectory—from studying individual mosquitoes in African villages to developing global strategies for climate-health adaptation—illustrates the expanding scope and increasing urgency of climate-health research.

Today, as climate change accelerates and its health impacts become increasingly apparent, Thomson’s unique combination of field experience, scientific expertise, and institutional leadership positions her as one of the most important voices in global health. Her journey from those early days in The Gambia to the corridors of international health policy demonstrates that sometimes the most impactful careers begin with the most fundamental questions about how the natural world affects human wellbeing.

The evolution of Madeleine Thomson’s career mirrors the evolution of climate-health science itself: from specialized, localized research to integrated, global approaches that recognize climate change as one of the defining health challenges of our time.