Dengue viruses are responsible for over 100 million infections a year worldwide and are a public health concern in Bangladesh. Although risk of transmission is high, data on vector population characteristics are scanty in Bangladesh; therefore, a comprehensive prediction of the patterns of local virus transmission is not possible. Recognizing these gaps, multi-year entomological surveys were carried out in Dhaka, where the disease is most frequently reported. The specific objectives of the present study are threefold: i) to determine the risk factors for the presence of Aedes mosquitoes; ii) to identify the types of most productive and key containers; and iii) to estimate the effects of climatic factors on Aedes abundance in the city of Dhaka, Bangladesh. Entomological surveys were conducted in 12 out of 90 wards in Dhaka. These wards were selected using a probability proportional sampling procedure during the monsoon seasons in 2011, 2012 and 2013 and in the dry season in 2012. All containers inside and around sampled households were inspected for mosquito larvae and pupae, and containers were classified according to their relative size, use pattern, and materials of construction. During the study period (2011–2013), 12,680 larvae and pupae were collected. About 82% of the identified immature mosquitoes were Aedes aegypti, while the remainder were Ae. albopictus and other mosquito species. The largest number of immature mosquitoes was collected from tires and refrigerator trays during 2011 and 2012 monsoon seasons. Conversely, plastic drums were the most productive during the 2012 dry and 2013 monsoon season. Vehicle parts and discarded construction materials were the most efficient producers of Aedes mosquitoes in all surveys. The presence of Aedes mosquitoes was significantly (p < 0.05) higher in low socio-economic zones of Dhaka. Container location, presence of vegetation, and availability of shade for containers were also significantly associated with finding immature Aedes mosquitoes, based on multivariable analysis after confounder adjustment. Rainfall, temperature, and relative humidity also significantly affected the mean abundance of mosquitoes. Proper use, disposal, and recycling of the containers that effectively produce large numbers of Aedes vector mosquitoes may decrease the risk of arboviral transmission.

登革热病毒每年在全球造成超过1亿次感染，是孟加拉国的公共健康问题。尽管传播的风险很高，但孟加拉国关于媒介种群特征的数据很少。因此，不可能全面预测本地病毒的传播方式。认识到这些差距，在达卡（Dhaka）进行了多年期昆虫学调查，该国是该病最常报告的地方。本研究的具体目标包括三个方面：i）确定伊蚊的存在的危险因素；ii）确定最有生产力和关键性的容器的类型；iii）估算气候因素对伊蚊的影响孟加拉国达卡市的人口丰富。在达卡的90个病区中，有12个病区进行了昆虫学调查。这些病房是在2011年，2012年和2013年的季风季节以及2012年的旱季使用概率比例抽样程序选择的。对抽样家庭内部和周围的所有容器进行了检查，以检查其蚊虫幼虫和p，并根据容器的分类对其进行分类。相对大小，使用方式和结构材料。在研究期间（2011-2013年），收集了12,680尾幼虫和p。大约82％的未成熟蚊子是埃及伊蚊，其余的是伊蚊。白化病和其他蚊子种类。在2011年和2012年的季风季节中，从轮胎和冰箱托盘收集的未成熟蚊子数量最多。相反，在2012年干燥和2013年季风季节，塑料鼓的生产力最高。在所有调查中，汽车零部件和废弃的建筑材料都是伊蚊的最有效生产者。在达卡的低社会经济区，伊蚊的存在显着较高（p <0.05）。容器的位置，植被的存在以及容器的阴影可用性也与发现未成熟伊蚊有关。蚊子，基于混杂因素调整后的多变量分析。降雨，温度和相对湿度也显着影响了蚊子的平均丰度。正确使用，处置和回收可有效产生大量伊蚊矢量的容器，可以降低传播虫媒病毒的风险。