In this episode we speak with Dr. Celso Bambaren, Head of Emergency Health Preparedness at PAHO, about the growing threat of heatwaves across the Americas.
Key Points
What is a heatwave? A heatwave is an unexpected and sustained rise in temperature above the average for a region, lasting at least 2–3 days. It can occur in both dry and humid climates, during the day or night.
Health impacts: The human body responds to heat through sweating and blood redistribution, but extreme heat can overwhelm these systems. This can lead to dehydration, heat exhaustion, and in severe cases, heatstroke, which can be fatal.
Vulnerable populations: Children under five, the elderly, people with chronic illnesses (e.g., heart disease, diabetes), outdoor workers, athletes, and migrants are especially at risk.
Prevention tips: Stay hydrated, wear loose clothing, avoid sun exposure during peak hours, seek shade or cool environments, and monitor for warning signs like cramps, nausea, or red, dry skin.
Urban heat islands: Urbanization contributes to higher temperatures in cities due to concrete, asphalt, and lack of vegetation, making heatwaves more intense.
PAHO’s role: PAHO supports countries by providing technical information, promoting public awareness, improving surveillance systems, and encouraging research to better understand and respond to heat-related health risks.
Heatwaves are a preventable public health emergency. With proper awareness and community support, their impact can be significantly reduced.
