"Dengue Spike in South America Triggers Urgent Vaccination Drive Amid Bug Spray Shortage"

South America is experiencing a surge in dengue cases, prompting Brazil to launch a vaccination campaign and Argentina to face shortages of bug spray. The region has seen a record number of cases, with Brazil doubling its dengue cases in January compared to last year. Rising temperatures and the El Nino weather pattern are contributing to prolonged dengue seasons and geographical spread of infections. The spread of dengue is exacerbated by climate change, leading to health warnings and shortages of insect repellent in affected countries.