Spatio-temporal analysis of reinfestation by Triatoma infestans (hemiptera: reduviidae) following insecticide spraying in a rural community in northwestern Argentina
Spatio-temporal analysis of reinfestation by Triatoma infestans (hemiptera: reduviidae) following insecticide spraying in a rural community in northwestern Argentina
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DOI：
10.4269/ajtmh.2004.71.803
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发表时间：
2004-12-01
影响因子：
3.3
通讯作者：
Kitron, U
中科院分区：
文献类型：
--
作者：
Cecere, MC;Vazquez-Prokopec, GM;Kitron, U
利用地理信息系统、卫星图像和空间统计分析了阿根廷西北部阿玛马农村地区地毯式喷洒杀虫剂后，三角蝽侵染的时空格局。从1993年至1997年监测了家蝇和家蝇的再感染情况。在评估的2110个部位中，75%至少检出一例感染三角瘤。1993-1995年（0.6-2.9%）至1997年11月（32%），研究期间至少有一次染有致病菌的站点的流行率急剧上升。感染弓形虫的最初来源是阿玛马南部的一个猪栏，在喷洒后一年。从1995年开始，随后的侵染聚集在这个最初的焦点周围，距离大约400米。1996年，在距离为25-175米的同一小区或相邻小区内，聚类最多。社区一级的有效控制方案将基于对实际疫源地和这些疫源地450米范围内的地点进行喷洒，以防止感染弓形虫的传播。
The spatio-temporal reinfestation patterns by Triatoma infestans following a blanket insecticide spraying in the rural community of Amama in northwestern Argentina were analyzed using a geographic information system, satellite imagery, and spatial statistics. Domestic and peridomestic reinfestation by triatomine bugs was monitored from 1993 to 1997. Triatoma infestans was detected at least once in 75% of 2,110 sites evaluated. The prevalence of sites positive at least once for T. infestans during the study period increased sharply from 1993-1995 (0.6-2.9%) to November 1997 (32%). The initial source of T. infestans was a pig corral in southern Amama one year post-spraying. Subsequent infestations were clustered around this initial focus at a distance of approximately 400 meters starting in 1995. In 1996, clustering was maximized in sites within the same or in neighboring compounds at distances of 25-175 meters. An effective control program on the community level will be based on the spraying of actual epicenters and sites within 450 meters of these epicenters to prevent the propagation of T. infestans.