Spatial Evaluation of Dengue Transmission and Vector Abundance in the City of Dhaka, Bangladesh

C. Emdad Haque (), Parnali Dhar-Chowdhury, Shakhawat Hossain and David Walker
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C. Emdad Haque: Natural Resources Institute, University of Manitoba, Winnipeg, MB R3T 2M6, Canada
Parnali Dhar-Chowdhury: Center for Sustainable Development and Resilience, University of the District of Columbia, Washington, DC 20008, USA
Shakhawat Hossain: Department of Mathematics and Statistics, University of Winnipeg, Winnipeg, MB R3B 2E9, Canada
David Walker: Department of Environment and Geography, University of Manitoba, Winnipeg, MB R3T 2M6, Canada

Geographies, 2023, vol. 3, issue 2, 1-18

Abstract: In recent years, many urban areas in low and middle income countries have experienced major dengue epidemics, and the city of Dhaka, the capital city of Bangladesh, is one of them. Understanding models based on land cover and land use in urban areas in relation to vector abundance and possible disease transmission can be a major epidemiological tool in identifying disease incidence and prevalence. Demographic and human behavioral factors can also play a role in determining microenvironments for entomological distribution—which is a major risk factor for epidemicity. Data collected from a cross-sectional entomological survey in the city of Dhaka during the monsoon season of 2012 and two serological surveys—one pre-monsoon and another post-monsoon in 2012—were analyzed in this study. A total of 898 households and 1003 containers with water were inspected, and 1380 Ae. aegypti pupae and 4174 larvae were counted in these containers. All Stegomyia indices were found to be the highest in the central business and residential mixed zone. The odds ratios of risk factors for seroprevalence, including sex, age, self-reported febrile illness during the previous six months, and travel during the last six months, were calculated; age distribution was found to be a highly significant risk factor ( p = value < 0.0001). The study offers clear patterns of dengue viral transmission, disease dynamics, and their association with critical spatial dimensions.

Keywords: dengue; mosquito; seroconversion; seroprevalence; spatial evaluation; vector abundance (search for similar items in EconPapers)
JEL-codes: Q1 Q15 Q5 Q53 Q54 Q56 Q57 (search for similar items in EconPapers)
Date: 2023
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