American
International
University-
Bangladesh

Students & Supervisors

Abstract

"Background In Bangladesh’s metropolitan areas, rapid urban growth has led to an increase in vector-borne infectious diseases, particu larly dengue. The expansion of urban areas and population densities has created increased opportunities for Aedes aegypti to breed in any number of conditions, including enduring waterlogging, difficult vector control, and a polluted urban en vironment lacking green space. While many methods have been used over the years, dengue continues to demonstrate spatiotemporal patterns, suggesting fundamental questions about the spatio-temporal relationships between urban growth and transmission of dengue fever must be answered. Methodology This study uses a geospatial time-series approach to examine urban growth indicators to better understand and observe the emergence of dengue fever hotspots from 2000-2023 in Bangladesh metropolitan areas. Urban growth indicators would include population density, built-up area percentage, waterlogging, total green space, vector control percentage, monsoon temperature, and dengue incidence. To conduct this research, data will be obtained from WorldPop, NASA Landsat, DGHS, IEDCR, BMD, and RAJUK. Dengue hotspots will be recorded using satellite imagery and visits to the hotspots. The hotspot data will be examined across periods using GIS mapping, and for spatio-temporal trends using spatial regression analyses. Results The research shows a 17-time increase in dengue incidence as the developed area increased from 32.5 to 90.4%. Similarly, waterlogged areas increased from 0.86 to 5.9 and contributed to the increasing density of hotspot formation - predominantly in areas in the urban core of Dhaka South, with an incidence peak of 449.7 per 100,000 in 2019. Regression model results further show that for every 1% of the developed area increased incidence rises by 3.2%, and 68% of the hotspot risk can be explained by the waterlogging areas. High-risk located near regulated rooftop tanks and in slums near construction sites. Vector control coverage has reached 86%, with resistance to insecticides increasing by 52%. The loss of green space is now at sub 1% which means less ecological regulation. Conclusion The majority of dengue risk in urban areas in Bangladesh is due to vegetated and flooding development; the increased built-up area creates saturation, increased stagnant water areas, and flooding, and enables vectors advantageous to breed ing induced by climate change. Although recent initiatives such as AI for forecasting dengue and the release of the Wol bachia pathogen have global perspectives, external gaps and regulatory non-compliance contribute to the persistent action of dengue control. Geospatial analysis should be integrated into urban planner decision-making for sustainable mitigation of dengue incidences in its growing cities that will remain climate-resilient"

Keywords

Publication Details

• Type of Publication:
• Conference Name: 1st International Conference on Geosciences for Achieving Sustainable Development Goals (ICGSDG)
• Date of Conference: 14/11/2025 - 14/11/2025
• Venue: University of Rajshahi
• Organizer: Faculty of Geosciences, University of Rajshahi