1. Overview In 2024, dengue fever cases in the Americas have reached an all-time high, raising alarms among global health authorities. The World Health Organization (WHO) reported over 4.5 million cases of dengue in the region this year. Brazil, Mexico, and Peru are among the hardest-hit countries, with climate change and urbanization identified as key drivers. 2. Causes of the Outbreak 2-1. Climate Change Rising temperatures and humidity due to global warming have expanded the habitat of Aedes aegypti , the mosquito responsible for spreading dengue. Increased rainfall has created more stagnant water, providing ideal breeding conditions for mosquitoes. 2-2. Urbanization and Population Density Urbanization has led to higher population density, increasing the likelihood of mosquito-human interactions and accelerating transmission. Poor sanitation in certain areas has further elevated infection risks. 2-3. Insufficient Vector Control Some countries lack adequate resources for vector...