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目的 探讨江西农村居民肠道寄生虫感染现状及蛔虫病生物流行病学特点。 方法 采用粪检、化疗驱虫后收集虫体等方法对江西进贤县鹿塘试区 6 2 5名居民进行了研究。 结果 该试区居民感染 9种肠道寄生虫 ,总感染率为 72 .80 % ,其中蛔虫、钩虫、鞭虫卵的阳性率分别为 5 1.5 2 %、11.80 %和 34 .6 0 %。以噻嘧啶对全体居民治疗后 ,在 5 9.40 %的居民中检获蛔虫 ,感染者平均虫荷为 2 .97条 (范围 1～ 32条 ) ,10 .0 0 %的排虫者可见未成熟蛔虫 ,推算人群每月蛔虫再感染率为 5 .13%。对粪检虫卵假阴性人群的分析显示 ,仅有单性蛔虫寄生者 (单雄或单雌 )占 82 .93% ,有 1条未成熟雌虫和 1～4条雄虫寄生者占 17.0 3%。粪检虫卵假阴性率随着寄生蛔虫数的增加而减少 ,当感染 6条以上蛔虫时 ,无假阴性出现。 结论 该社区人群肠道寄生虫感染率高 ,蛔虫再感染严重 ,有必要进行反复治疗以巩固防治效果 ;由于单性感染或未成熟蛔虫的缘故 ,居民实际蛔虫感染率要高于 Kato- Katz法检查所见
Objective To investigate the status of intestinal parasitic infections and the epidemiological characteristics of ascariasis among rural residents in Jiangxi Province. Methods A total of 625 residents of Luntang Experimental District in Jinxian County of Jiangxi Province were studied by fecal examination, collection of insects by chemical de-worming and other methods. Results The residents of this test group were infected with 9 kinds of intestinal parasites, the total infection rate was 72.80%. The positive rates of roundworm, hookworm and whipworm eggs were 5 1.52%, 11.80% and 34.60% respectively. Aspiraceae were seized in 59.40% of the residents after treatment with pyrantel to all the residents. The average number of worms in the infected persons was 2.97 (range 1 to 32). In 10.0% of the worms, immature roundworms , Estimated population monthly roundworm re-infection rate was 5.13%. Analysis of false-negative fecal dropworm populations showed that only 82.93% of uniparental ascaris parasites (single or single) accounted for 17.0% of the population, with one unripe female and one to four male parasites 3%. False negative rates of fecal insects decreased with the increase of the number of parasitic roundworms, and no false negative appeared when more than 6 roundworms were infected. Conclusion The prevalence of intestinal parasites in this community is high, roundworm infection is serious again, so it is necessary to carry out repeated treatment to consolidate the control effect. As a result of unilateral infection or immature roundworm, the actual infection rate of residents is higher than that of Kato-Katz Check what you see