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目的了解掌握汝城县土源性线虫病流行现状和趋势,评估其防治效果,为今后制定防治策略提供依据。方法随机抽取5个乡镇5个行政村,每个行政村抽取常住人口200人以上,用改良加藤氏厚涂片法镜检虫卵,并计算感染度(克粪卵数);采用试管滤纸培养法分离钩蚴。结果 5个调查点共检查1 000人,共发现4种土源性线虫,人群总感染率为10.2%,其中:蛔虫5.6%、钩虫3.5%、鞭虫0.7%、蛲虫0.4%。各乡镇蛔虫、钩虫感染率差异无统计学意义(χ2=4.29,P>0.05)和(χ2=4.74,P>0.05);男、女性感染率差异无统计学意义(χ2=2.97,P>0.05)。男、女钩虫感染率差异有统计学意义(χ2=10.19,P<0.01);各年龄组钩虫感染率差异有统计学意义(χ2=49.5,P<0.01);单纯十二指肠钩虫(Ancylostoma duodenale)占29%;单纯美洲钩虫(Necator americanus)占71%。结论人群感染率较20年前第1次调查结果有大幅度下降,但仍需继续加强农村寄生虫病防治知识普及、粪便无害化处理和重点人群药物驱虫,以巩固防治成果。
Objective To understand the current situation and trend of soil-borne nematode disease in Rucheng County, evaluate its control effect and provide the basis for future prevention and control strategies. Methods Five villages and 5 administrative villages were randomly selected. Each administrative village had a resident population of more than 200, and the number of infected eggs (g) was counted by modified Kato’s thick smear method. The test tube filter paper was used to culture Law separation of the larvae. Results A total of 1 000 people were surveyed in 5 survey sites. Four kinds of soil-borne nematodes were found, with a total infection rate of 10.2%. Roundworms were 5.6%, hookworm 3.5%, whipworm 0.7% and pinworm 0.4%. There were no significant differences in the infection rates of roundworms and hookworms among towns (χ2 = 4.29, P> 0.05) and (χ2 = 4.74, P> 0.05) ). (Χ2 = 10.19, P <0.01). The infection rate of hookworm in each age group was significantly different (χ2 = 49.5, P <0.01). Ancylostoma duodenale accounted for 29%; simple American hookworm Necator americanus accounted for 71%. Conclusion The population infection rate dropped significantly from the first survey 20 years ago. However, it is still necessary to continue strengthening the knowledge of prevention and treatment of parasitic diseases in rural areas, detoxification of excrement and deworming drugs in key populations so as to consolidate the results of prevention and treatment.