Brazil is developing an action plan to adapt the health sector to climate change, which it will present at COP30 in November in Belém. The plan includes improving health monitoring, warning systems and linking weather data with health systems. In 2023, the country experienced the largest dengue epidemic in history and historic flooding that displaced more than half a million people. The World Health Organization (WHO) estimates that climate change will cause approximately 250,000 deaths per year between 2030 and 2050 due to malnutrition, infectious diseases and heat stress. The plan is based on the principles of health equity, climate and health leadership, good governance and social participation. It also includes measures such as strategic drug stocks and evidence-based adaptations. These activities take place in cooperation with civil society, international organizations and the academic community.[1][2][3]