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Intestinal parasites in child and youth populations of Argentina: Environmental factors determining geographic distribution
Revista Argentina de Microbiología ( IF 1.9 ) Pub Date : 2021-01-05 , DOI: 10.1016/j.ram.2020.11.004
Paola Cociancic 1 , Sandra Edith Torrusio 2 , Mariela Garraza 3 , María Lorena Zonta 1 , Graciela Teresa Navone 1
Affiliation  

The transmission of intestinal parasites is generally considered to be “mediated by the environment” which suggests that they are particularly sensitive to the changes that occur in it. The aim of the present study was to evaluate the environmental variables that act as risk factors for intestinal parasitosis in children and youths in Argentina. The association between environmental variables related to temperature, precipitation and soil and parasitosis found in children and youths from different provinces was evaluated, including land use/cover classes obtained from satellite images. Of the total population analyzed, 66.9% of the participants were parasitized. The total number of identified parasite species was 17 and the most prevalent were Blastocystis sp. (42.2%), Enterobius vermicularis (33.6%) and Giardia lamblia (17.0%). Infection by protozoa, and by G. lamblia in particular, was greater when the mean summer temperature was higher (OR = 1.2 for both). Blastocystis sp. and geohelminths were greater due to an increase in isothermality (OR = 1.1 and 1.2, respectively). The risk of infection with Ascaris lumbricoides was associated with an increase in the temperature in the wettest quarter (OR = 1.2). Hookworm infection was associated with an increase in the normalized difference vegetation index (OR = 32.5). Most of participants infected with hookworms lived in areas with abundant arboreal-shrubby and agropastoral use vegetation. The heterogeneous distribution of enteric parasites is indicative of the wide environmental variability of Argentina.



中文翻译:

阿根廷儿童和青年的肠道寄生虫:决定地理分布的环境因素

肠道寄生虫的传播通常被认为是“由环境介导的”,这表明它们对其中发生的变化特别敏感。本研究的目的是评估作为阿根廷儿童和青少年肠道寄生虫病危险因素的环境变量。评估了与温度、降水和土壤相关的环境变量与来自不同省份的儿童和青少年发现的寄生虫病之间的关联,包括从卫星图像中获得的土地利用/覆盖等级。在分析的总人口中,66.9% 的参与者被寄生。鉴定出的寄生虫种类总数为 17 种,最普遍的是芽孢杆菌属。(42.2%),蠕虫(33.6%) 和贾第鞭毛虫(17.0%)。当夏季平均温度较高时(两者的OR = 1.2),原生动物,尤其是G.lamblia 的感染更大。菌。由于等温性的增加(OR分别为1.1 和 1.2),地蠕虫和地蠕虫更大。蛔虫感染风险与最潮湿区温度升高有关 (OR = 1.2)。钩虫感染与归一化差异植被指数的增加有关(OR =        32.5)。大多数感染钩虫的参与者生活在具有丰富的乔木灌木和农牧用植被的地区。肠道寄生虫的异质分布表明阿根廷的环境变化很大。

更新日期:2021-01-05
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