Dengue Transmission in Bangladesh: A Retrospective Analysis of Case Trends and Mortality

Dengue virus remains a critical public health challenge in Bangladesh, with widespread prevalence contributing substantially to morbidity and mortality. Seasonal control of mosquito breeding is an essential strategy to prevent outbreaks. This study assesses dengue prevalence in 2022, contrasting it with data from previous years to identify peak transmission periods. Monthly case reports from the Bangladesh Institute of Epidemiology, Disease Control, and Research (2010-2022) revealed 51,089 confirmed dengue cases and 254 deaths in 2022, marking the highest annual mortality since 2000. Strikingly, 31.14% of all dengue-related deaths recorded since 2000 occurred in 2022 alone, emphasizing the escalating threat. Our analysis further indicates that the latter half of the year carries the highest transmission risk, with Dhaka and Chittagong bearing the heaviest burden (mortality rates of 0.42% and 0.70%, respectively), underscoring the role of population density. The significant rise in daily cases in 2022 highlights an urgent need for immediate interventions by individuals and government authorities to control the epidemic and prevent further escalation. These interventions could include increased mosquito control measures, public health campaigns, and improved healthcare infrastructure. Collaboration among all stakeholders is vital in this fight against dengue.