Departamento de Pediatria, Universidade Federal de São Paulo, SP, Brazil.
J Pediatr (Rio J). 2010 Nov-Dec;86(6):493-6. doi: 10.2223/JPED.2036. Epub 2010 Nov 10.
To evaluate the prevalence of intestinal parasitoses in Native Brazilian children from 2 to 9 years old.
A search for ova and parasites was conducted in the stools of children between 2 to 9 years old living in six indigenous villages located in the Middle and Lower Xingu River, to wit: Pavuru, Moygu, Tuiararé, Diauarum, Capivara, and Ngojwere. The study utilized the Paratest kit® (Diagnostek, Brazil) to preserve collected stools. Fecal samples were shipped to the Laboratory of the Pediatric Gastroenterology Division of the UNIFESP/EPM, in São Paulo, for analysis. The search for ova and parasites was performed utilizing the Hoffman method, and later through optical microscopic evaluation. Fecal samples were collected one year apart from each other.
There were no significant statistical differences between the mean ages of the children from the six indigenous villages studied. The search for ova and parasites found positive results for the stools of 97.5% (198/202) and 96.1% (98/102) of children in the first and second collections, respectively. There was no statistical association with the children's age. The search performed one year later found no differences in the proportion of parasites identified in the first collection for protozoa (93.3% in 2007 versus 93.3% in 2008, McNemar = 0.01, p = 0.1) or for helminths (37.1% in 2007 versus 38.2% in 2008, McNemar = 0.03, p = 0.85). There were significant differences in prevalence of Entamoeba coli between 2007 (43.8%) and 2008 (61.8%) (McNemar Chi 6.1; p = 0.0135). There were no significant differences for other parasites when comparing the results of the two studies.
The high prevalence of intestinal parasitosis matched the elevated rates of environmental contamination in this indigenous community.
评估 2 至 9 岁的巴西本地儿童肠道寄生虫病的流行情况。
在位于欣古河中下游的六个土著村落（Pavuru、Moygu、Tuiararé、Diauarum、Capivara 和 Ngojwere）中，对 2 至 9 岁的儿童进行粪便寄生虫卵和寄生虫检查。本研究使用 Paratest 试剂盒（巴西 Diagnostek）保存收集的粪便。粪便样本被运送到位于圣保罗的 UNIFESP/EPM 儿科胃肠病学分部的实验室进行分析。使用 Hoffman 方法和光学显微镜评估来检查寄生虫卵和寄生虫。粪便样本每一年收集一次。
六个土著村落的儿童平均年龄之间没有显著的统计学差异。第一次和第二次收集的粪便样本中，寄生虫卵和寄生虫检查结果均为阳性，阳性率分别为 97.5%（198/202）和 96.1%（98/102）。儿童年龄与结果无统计学关联。一年后进行的检查结果显示，对于原虫，在第一次收集时发现的寄生虫比例在两次检查中没有差异（2007 年为 93.3%，2008 年为 93.3%，McNemar = 0.01，p = 0.1），对于蠕虫，在第一次收集时发现的寄生虫比例在两次检查中也没有差异（2007 年为 37.1%，2008 年为 38.2%，McNemar = 0.03，p = 0.85）。2007 年（43.8%）和 2008 年（61.8%）之间的大肠埃希菌（Entamoeba coli）患病率有显著差异（McNemar Chi 6.1；p = 0.0135）。当比较两次研究的结果时，其他寄生虫的患病率没有显著差异。
肠道寄生虫病的高患病率与该土著社区中升高的环境污染率相匹配。
