Bangladesh faces a severe dengue outbreak, surpassing 300,000 cases within 51 days, with 1,554 fatalities, the highest in its history. Climate change extends Aedes mosquito breeding seasons in the country’s tropical climate, worsening urbanization’s impact. The DENV2 variant, identified as the most severe strain, amplifies the outbreak. Symptoms include fever, joint pain, and bleeding, prompting WHO warnings. Preventive measures focus on eliminating standing water, using repellents, and protective clothing.