Patterns of Geographic Expansion of Aedes aegypti in the Peruvian Amazon
Patterns of Geographic Expansion of Aedes aegypti in the Peruvian Amazon
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DOI：
10.1371/journal.pntd.0003033
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发表时间：
2014-08-01
影响因子：
3.8
通讯作者：
Kitron, Uriel
中科院分区：
文献类型：
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作者：
Guagliardo, Sarah Anne;Barboza, Jose Luis;Kitron, Uriel
背景和目的：在秘鲁亚马逊地区，登革热媒介埃及伊蚊在伊基托斯等大城市中心大量传播。近年来，在气候和社会经济条件相似的一些邻近农村社区也发现了这种疾病。为了更好地了解Ae.方法：在伊基托斯市周边的34个社区中，我们对伊基托斯市周围的34个社区进行了调查，并部署了诱蚊产卵器。接受调查的社区位于两个地段：亚马逊河和一条95公里长的高速公路。计算了昆虫学指数，绘制了Ae。埃及伊蚊的存在，并开发了单变量和多变量Logistic回归模型来预测Ae。埃及伊蚊在社区、家庭或集装箱层面的存在。结果：靠近伊基托斯的大型社区更有可能感染埃及伊蚊。埃及伊蚊。在出没的社区内，有Ae.与没有Ae的房屋相比，埃及人有更多被动填充的容器，并且更容易感染其他蚊子属。埃及伊蚊。对于容器，大型水箱/桶和暴露在阳光下的容器更有可能感染Ae。埃及伊蚊。Ae.地图。埃及伊蚊的存在显示出沿高速公路的线性侵扰模式，以及沿亚马逊河的分散模式。我们还确定了Ae的地理界限。埃及埃及人沿着高速公路在伊基托斯以南19.3公里处扩张。埃及伊蚊的地理传播是由河流和高速公路沿线的人类交通网络推动的。我们的结果表明，城市发展和产卵地点的可用性推动了Ae。埃及人沿道路殖民。沿着河流，船只交通可能会通过船只无意中运送蚊子来推动长距离的传播。
Background and Objectives: In the Peruvian Amazon, the dengue vector Aedes aegypti is abundant in large urban centers such as Iquitos. In recent years, it has also been found in a number of neighboring rural communities with similar climatic and socioeconomic conditions. To better understand Ae. aegypti spread, we compared characteristics of communities, houses, and containers in infested and uninfested communities.Methods: We conducted pupal-demographic surveys and deployed ovitraps in 34 communities surrounding the city of Iquitos. Communities surveyed were located along two transects: the Amazon River and a 95km highway. We calculated entomological indices, mapped Ae. aegypti presence, and developed univariable and multivariable logistic regression models to predict Ae. aegypti presence at the community, household, or container level.Results: Large communities closer to Iquitos were more likely to be infested with Ae. aegypti. Within infested communities, houses with Ae. aegypti had more passively-filled containers and were more often infested with other mosquito genera than houses without Ae. aegypti. For containers, large water tanks/drums and containers with solar exposure were more likely to be infested with Ae. aegypti. Maps of Ae. aegypti presence revealed a linear pattern of infestation along the highway, and a scattered pattern along the Amazon River. We also identified the geographical limit of Ae. aegypti expansion along the highway at 19.3 km south of Iquitos.Conclusion: In the Peruvian Amazon, Ae. aegypti geographic spread is driven by human transportation networks along rivers and highways. Our results suggest that urban development and oviposition site availability drive Ae. aegypti colonization along roads. Along rivers, boat traffic is likely to drive long-distance dispersal via unintentional transport of mosquitoes on boats.