BACKGROUND We conducted a matched-pairs trial of three methods for detecting house infestation with triatominae bugs in a well-defined endemic rural area in the Argentine Chaco. METHODS The three methods included a simple double-sided adhesive tape (ST) installed near host resting sites; timed-manual collections with a dislodging aerosol (TMC, the reference method used by vector control programmes), and householders' bug notifications (HN). Triatomine infestations were evaluated in 103 sites of 54 houses, including domiciles, kitchens and storerooms. RESULTS In domiciles where Triatoma infestans was collected, sensitivity of each single method decreased from 79% by ST and 77% by HN, to 57% by TMC, and increased to 92% when ST was combined with HN. In peridomestic kitchens and storerooms, TMC was relatively as sensitive as ST and significantly more sensitive than HN. On average, the number of bugs recovered by ST was 0.94 times that collected by TMC. The ST mainly collected early-instar nymphs whereas TMC yielded late (larger) stages. Triatomines caught by ST had significantly lower mean weight-to-length ratios and lower blood-feeding rates than those caught by TMC, suggesting the ST intercepted and trapped vectors seeking a blood meal host. CONCLUSIONS The ST may effectively replace TMC for detecting T. infestans in domiciles, and is especially apt for early detection of low-density domestic infestations in the frame of community-based surveillance or elimination programmes; decision making on whether an area should be targeted for full-coverage insecticide spraying, and to corroborate that extant conditions are compatible with the interruption of vector-borne transmission.

中文翻译：

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使用粘性捕集器改进对含三氟精胺的房屋感染的检测：在阿根廷Chaco进行的配对比较试验。

背景技术我们进行了三种配对配对试验，以检测阿根廷查科（Chaco）一个明确的地方性农村地区的三足纲虫的家蝇侵扰。方法三种方法包括在宿主休息位附近安装简单的双面胶带（ST）。定时手动收集，带有可散布的气溶胶（TMC，矢量控制程序使用的参考方法），以及住户的虫害通知（HN）。在54个房屋的103个场所（包括住所，厨房和储藏室）评估了三氢嘧啶的侵染情况。结果在收集了Triatoma infestans的住所中，每种方法的灵敏度从ST的79％和HN的77％降低到TMC的57％，而ST与HN结合时的灵敏度提高到92％。在家用厨房和储藏室中 TMC与ST相对敏感，并且比HN敏感得多。平均而言，ST回收的错误数量是TMC收集的错误数量的0.94倍。ST主要收集早熟若虫，而TMC产生较晚（较大）阶段。被ST捕获的三氢嘧啶的平均重均比和被喂血的比率均显着低于TMC，这表明ST拦截并捕获了寻找血粉宿主的载体。结论ST可以有效地代替TMC来检测住所中的T. infestans，并且特别适合在基于社区的监视或消除计划的框架内及早发现低密度家庭感染；决定是否应针对某个区域进行全覆盖杀虫剂喷雾，