Priskilla Jency J, Kulandaisamy Athisaya Mary, Appadurai Daniel Reegan, Srirama Srikanth, Ananganallur Nagarajan Shriram, Rahi Manju
Epidemiology and Operational Research, ICMR-Vector Control Research Centre, Puducherry, India.
Innovation and Product Development, ICMR-Vector Control Research Centre, Puducherry, India.
Trop Med Int Health. 2025 Aug;30(8):823-830. doi: 10.1111/tmi.14137. Epub 2025 Jun 3.
Industrial zones are large, unsupervised areas with a high risk of Aedes vector infestation because of the presence of diverse artificial breeding habitats. Unlike community-based Aedes surveys, research on vector breeding in industrial settings is limited. Therefore, this research aimed to explore Aedes vector infestation levels in industrial regions, their breeding places and the presence of dengue virus transmission.
An Aedes immature survey was conducted in 70 industrial units of an urban industrial estate of Puducherry, following standard protocols by the National Centre for Vector Borne Disease Control. The collected immatures were reared for adult emergence and species identification. Larval indices and breeding habitat contribution for Aedes aegypti and Aedes albopictus were carried out. Furthermore, adult traps were set up to detect the presence of Dengue viral RNA in adult mosquitoes. Chi-square statistics were performed to find the association of breeding positivity with industry types and container types.
Aedes breeding was noted in 48 units (68.6%). All industrial types had remarkably high Aedes indices. In industrial areas, Ae aegypti was the most common dengue vector species, followed by Ae. albopictus. Out of the nine major container types, discarded types had a 90% positivity rate. Significant associations were also noted between container positivity and industry type (Χ 15.7, p < 0.001), mosquito species and industry type (Χ 16, p = 0.0143) and container type on mosquito breeding (Χ 48.9, p < 0.001). Molecular analysis showed no detectable levels of dengue virus in the mosquito samples.
Surveillance on Aedes density is important in determining factors related to dengue transmission, in order to prioritise areas and seasons for vector control. Aedes mosquito populations in industrial settings pose a serious threat to public health. Appropriate surveillance and control strategies need to be framed for such large non-residential areas at a policy level. Combining environmental management techniques, innovative vector control methods and community engagement may help reduce the health concerns associated with Aedes in these complex industrial settings.
工业区面积大且缺乏监管，由于存在各种人工繁殖栖息地，伊蚊媒介滋生风险很高。与基于社区的伊蚊调查不同，关于工业区病媒滋生的研究有限。因此，本研究旨在探索工业区伊蚊媒介滋生水平、其繁殖场所及登革热病毒传播情况。
按照国家病媒传播疾病控制中心的标准方案，在本地治里一个城市工业区的70个工业单位进行了伊蚊幼虫调查。将收集到的幼虫饲养至成虫羽化并进行种类鉴定。计算埃及伊蚊和白纹伊蚊的幼虫指数及繁殖栖息地贡献率。此外，设置了成蚊诱捕器以检测成蚊中登革病毒RNA的存在。进行卡方统计以找出繁殖阳性与行业类型和容器类型之间的关联。
在48个单位（68.6%）发现有伊蚊繁殖。所有工业类型的伊蚊指数都非常高。在工业区，埃及伊蚊是最常见的登革热媒介物种，其次是白纹伊蚊。在九种主要容器类型中，废弃类型的阳性率为90%。还发现容器阳性与行业类型（Χ = 15.7，p < 0.001）、蚊种与行业类型（Χ = 16，p = 0.0143）以及容器类型与蚊虫繁殖（Χ = 48.9，p < 0.001）之间存在显著关联。分子分析显示蚊虫样本中未检测到登革病毒。
监测伊蚊密度对于确定与登革热传播相关的因素很重要，以便为病媒控制确定重点区域和季节。工业区的伊蚊种群对公众健康构成严重威胁。需要在政策层面为这类大型非居住区域制定适当的监测和控制策略。结合环境管理技术、创新的病媒控制方法和社区参与，可能有助于减少这些复杂工业区与伊蚊相关的健康问题。
