The WHO, Brazilian Government, and a coalition of philanthropies are calling for urgent action to protect health systems in a warming world, as 1 in 12 hospitals could face climate-related shutdowns. With global temperatures already above 1.5°C and billions living in highly vulnerable areas, the health sector's 5% contribution to global greenhouse gas emissions underscores the need for a transition to low-carbon systems. Gaps in health adaptation planning, including risks to health facilities and marginalized populations, must be addressed. Ms. Maciel stresses the importance of training health professionals to address climate-related extreme events and adapting healthcare systems to climate impacts, with a focus on monitoring data, building resilience, and promoting research and innovation for heat-resistant medicines and vaccines. She warns of potential health risks in the Amazon due to deforestation and urges effective implementation of the Belém Health Action Plan to mitigate these threats.