Eco-bio-social determinants of dengue vector breeding: a multicountry study in urban and periurban Asia
Eco-bio-social determinants of dengue vector breeding: a multicountry study in urban and periurban Asia
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DOI：
10.2471/blt.09.067892
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发表时间：
2010-03-01
期刊：
影响因子：
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通讯作者：
Petzold, Max
中科院分区：
文献类型：
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作者：
Arunachalam, Natarajan;Tana, Susilowati;Petzold, Max
目的研究不同条件下登革热媒介在公共场所和私人场所的传播模式，探讨媒介滋生和病毒传播所涉及的生态、生物和社会(生态-生物-社会)因素，明确媒介控制的主要意义。方法在亚洲6个城市或周边地区，随机选择城市群进行标准化住户调查、社区背景调查和昆虫学调查。他们收集了有关病媒滋生地点、人们对登革热的知识、态度和做法以及研究地区特点的信息。对所有场所进行了检查；用幼虫指数来量化媒介繁殖点，用蛹计数来识别有生产力的水容器类型，并作为成年媒介丰度的替代指标。发现最有生产力的媒介繁殖点是室外水容器，特别是如果没有盖住的话，灌木丛下，至少一个星期没有使用。与学校和宗教设施以外的商业和公共空间相比，围栏和家庭内部区域对蛹的生产要重要得多。在供水和蛹数量之间发现了复杂但不显著的关联，缺乏废物处理服务与只有一个地点的较高媒介丰度有关。对登革热及其传播的了解越多，蚊子繁殖和产量就越低。媒介生物控制措施(主要是在一个地点灭幼虫)大大减少了幼虫和蛹的数量，并将蚊子的繁殖“推”到了替代容器。结论媒介媒介的繁殖和埃及伊蚊成虫的产生受到多种因素的复杂交互作用的影响。因此，为了实现有效的病媒管理，除常规杀幼虫或局部喷洒之外的公共卫生应对措施至关重要。
Objective To study dengue vector breeding patterns under a variety of conditions in public and private spaces; to explore the ecological, biological and social (eco-bio-social) factors involved in vector breeding and viral transmission, and to define the main implications for vector control.Methods In each of six Asian cities or periurban areas, a team randomly selected urban clusters for conducting standardized household surveys, neighbourhood background surveys and entomological surveys. They collected information on vector breeding sites, people's knowledge, attitudes and practices surrounding dengue, and the characteristics of the study areas. All premises were inspected; larval indices were used to quantity vector breeding sites, and pupal counts were used to identify productive water container types and as a proxy measure for adult vector abundance.Findings The most productive vector breeding sites were outdoor water containers, particularly if uncovered, beneath shrubbery and unused for at least one week. Peridomestic and intradomestic areas were much more important for pupal production than commercial and public spaces other than schools and religious facilities. A complex but non-significant association was found between water supply and pupal counts, and lack of waste disposal services was associated with higher vector abundance in only one site. Greater knowledge about dengue and its transmission was associated with lower mosquito breeding and production. Vector control measures (mainly larviciding in one site) substantially reduced larval and pupal counts and "pushed" mosquito breeding to alternative containers.Conclusion Vector breeding and the production of adult Aedes aegypti are influenced by a complex interplay of factors. Thus, to achieve effective vector management, a public health response beyond routine larviciding or focal spraying is essential.