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The objective of this narrative review is to analyse 24\u2009years of surveillance data to describe temporal trends, the transition from urban\u2010centric to nationwide endemicity and the influence of climatic drivers. This review synthesises national surveillance and published reports from 2001 to 2024 to assess demographic risk, geographic spread and environmental factors. Young adults (21\u201330\u2009years) consistently account for the largest share of infections (28.82% in 2024). In contrast, adults over 50\u2009years suffer disproportionate mortality (15.65% of deaths in 2024) despite a smaller share of infections (7.15%). Since 2019, transmission has extended beyond urban centres such as Dhaka into peri\u2010urban and other districts. This geographical diffusion is driven by the rapid urbanisation of other peripheries, infrastructure development that creates new vector habitats and accelerated population mobility which connects hyper\u2010endemic urban hubs with susceptible rural communities. We identify priority actions such as targeted risk communication for young adults, improved access to healthcare for older adults and climate\u2010adaptive vector control strategies integrated with urban services and strengthened surveillance. It is essential to address these factors to reduce the dengue burden and improve health outcomes in Bangladesh to control mosquito populations. Lessons are transferable to other dengue\u2010affected countries when adapted to local demographic and environmental contexts and embedded in regional collaboration and climate\u2010responsive policy.<\/jats:p>","DOI":"10.1111\/tmi.70136","type":"journal-article","created":{"date-parts":[[2026,4,6]],"date-time":"2026-04-06T22:49:30Z","timestamp":1775515770000},"page":"772-795","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Two Decades of Dengue in Bangladesh (2001\u20132024): Epidemiologic Trends, Geographic Spread and Climatic Drivers"],"prefix":"10.1111","volume":"31","author":[{"given":"Awnon","family":"Bhowmik","sequence":"first","affiliation":[{"name":"Department of Business &amp; Management Colorado State University Global  Denver Colorado USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahmudul","family":"Hasan","sequence":"additional","affiliation":[{"name":"Department of Mathematics 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