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Ascaris and hookworm transmission in preschool children in rural Panama: role of subsistence agricultural activities

机译：巴拿马农村学龄前儿童的scar虫和钩虫传播：自给农业活动的作用

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摘要

This longitudinal study explored whether aspects of subsistence agriculture were associated with presence and intensity of Ascaris and hookworm in preschool children in rural Panama. Questionnaires were used to collect data on household socio-demographics, child exposure to agriculture and household agricultural practices. Stool samples were collected from children (6 months-5 years) at 3 time points, with albendazole administered after each to clear infections, resulting in 1 baseline and 2 reinfection measures. A novel Agricultural Activity Index (AAI) was developed using principal components analysis to measure the intensity of household agricultural practices. Zero-inflated negative binomial regression models revealed baseline hookworm egg counts were higher if children went to the agricultural plot and if the plot was smaller. Baseline and reinfection Ascaris egg counts were higher if children went to the plot and households had higher AAI, and higher at baseline if the plot was smaller. Caregiver time in the plot was negatively associated with baseline Ascaris egg counts, but positively associated with baseline hookworm and Ascaris reinfection egg counts. Children who spent more time playing around the home were less likely to be infected with Ascaris at baseline. We conclude that preschool child exposure to subsistence agriculture increased Ascaris and hookworm intensity.
机译：这项纵向研究探讨了生计农业的各个方面是否与巴拿马农村学龄前儿童的A虫和钩虫的存在和强度有关。问卷被用来收集有关家庭社会人口统计数据，儿童对农业的接触以及家庭农业作法的数据。在3个时间点从儿童（6个月至5岁）中收集粪便样本，每次后均使用阿苯达唑清除感染，从而获得1个基线和2个再感染措施。使用主成分分析法开发了一种新的农业活动指数（AAI），以衡量家庭农业实践的强度。零膨胀负二项式回归模型显示，如果孩子去了农业地块，且地块较小，则钩虫的基线卵数更高。基线和再感染如果儿童前往该地块且家庭的AAI较高，则scar虫卵计数会更高;如果该地块较小，则其基准线会更高。该情节中的照顾者时间与基线A虫卵数呈负相关，但与基线钩虫和A虫再感染卵数呈正相关。花更多时间在家里玩的孩子在基线时感染less虫的可能性较小。我们得出的结论是，学龄前儿童接触自给农业会增加A虫病和钩虫的强度。

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