Association among ecological and behavioural attributes, dengue vector and disease control: a cross-sectional study of the city of Dhaka, Bangladesh

Abstract

Background This study examines vector density, the prevailing knowledge, awareness, attitudes and practice (KAAP) of community members regarding dengue disease and their willingness to pay (WTP) for vector control in Dhaka, Bangladesh. Methods A population-based, cross-sectional study design was followed: (i) an entomological survey was carried out in 727 randomly selected households in 12 wards, representing four urban ecological zones and (ii) a survey of 330 household heads was conducted to study their KAAP. The χ2 test and multinomial logistic regression (MLR) were applied to investigate factors associated with WTP and other variables. Results The Stegomyia indices significantly vary among the urban zones, revealing that the paved and built areas with concentrated public/commercial services have the highest mosquito density. Most respondents (93.9%) knew about dengue and its severity (90.3%); however, many of them were unaware (79.3%) about the types of mosquitoes causing dengue. MLR modelling reveals that average spending per month for mosquito control, household income and knowledge about the effects of land use and seasonality on dengue were significantly associated with the WTP for controlling the dengue vector. Conclusions Concerted efforts should be made to increase awareness about dengue transmission and develop community-based sustainable dengue vector control programmes involving both the public and private sectors.

Public knowledge, belief, and preventive practices regarding dengue: Findings from a community-based survey in rural Bangladesh

“…This finding was consistent with findings from earlier research conducted in other countries [23,50]. When compared to the findings of previous research in Dhaka [30,51], findings from present study indicates that community members have a better understanding of dengue fever. This higher trend in knowledge might be attributed to health officials' increased educational campaigns in response to ongoing outbreaks and an exponential growth in the number of dengue cases in recent years [12,52,53].…”

Dengue in Dhaka, Bangladesh: Hospital-based cross-sectional KAP assessment at Dhaka North and Dhaka South City Corporation area

“…Most respondents were aware that the mosquitoes that transmit dengue, Aedes aegypti and Aedes albopictus , require stagnant water to propagate and could lay eggs even in clean water containers suggesting an increase in knowledge of dengue transmission when compared to the results from earlier studies in Dhaka [ 31 , 36 ]. This upward trend in knowledge may be due to the intensified educative campaigns from health authorities owing to the continued outbreaks and exponential increase in the number of dengue cases in the last six years [ 9 ].…”

Predatory competence of Danio rerio (Cypriniformes: Cyprinidae) and Poecilia reticulata (Cyprinodontiformes: Poeciliidae) as biocontrol agent of Aedes larvae (Diptera: Culicidae) under the laboratory condition

“…Mosquito-borne diseases are still a major issue in almost every tropical and subtropical country (Sangeetha et al 2021) causing the death of over 700,000 people every year globally (Islam et al 2020). Bangladesh is located in the dengue endemic area of South-East Asia (Rafi et al 2020), and is a suitable habitat for the dengue vector and increased transmission (Mutsuddy et al 2019).…”