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目的了解彭山县土源性线虫感染现状,为防治工作提供科学依据。方法全县分东南西北中5个片区进行随机抽样,采用改良加藤厚涂片法检查土源性线虫卵。结果共调查974人,检出3种土源性线虫,总感染率为12.63%;其中蛔虫、钩虫、鞭虫感染率分别为10.57%、1.33%、0.72%。地区分布低山丘陵地区感染率高于平坝地区,总感染率及蛔虫的感染率差异具有统计学意义(χ2总=21.97,χ2蛔虫=14.93,P值均小于0.05)。总感染率、蛔虫、钩虫、鞭虫感染率性别差异均无统计学意义(P值均>0.05)。20岁以下和31~40岁组总感染率最高,分别为15.69%和19.50%,各年龄组总感染率及蛔虫的感染率差异有统计学意义(χ2总=12.45,χ2蛔虫=13.39,P值均小于0.05)。结论与2002年调查相比,彭山县人体土源性线虫感染率呈明显下降趋势,以蛔虫感染为主,低山丘陵地区感染较严重,防治工作任重道远。今后防治工作重点地区为低山丘陵地区。
Objective To understand the status of soil-borne nematode infection in Pengshan County and provide scientific evidence for prevention and control. Methods The whole county was divided into 5 regions in southeast, northwest and north of China. Random sampling was conducted to check the soil-borne nematode eggs by modified Kato thick smear method. Results A total of 974 people were surveyed. Three kinds of soil-borne nematodes were detected with a total infection rate of 12.63%. The infection rates of roundworm, hookworm and whipworm were 10.57%, 1.33% and 0.72% respectively. The prevalence of infection in hilly region was higher than that in Pingba. The total infection rate and the infection rate of roundworms were statistically significant (χ2 = 21.97, χ2 = 6.09, P <0.05). The total infection rate, roundworm, hookworm, whipworm infection rate of gender differences was not statistically significant (P> 0.05). The total infection rate was highest in patients under 20 years old and 31-40 years old, accounting for 15.69% and 19.50%, respectively. The total infection rate in each age group and the infection rate of roundworm were statistically significant (χ2 = 12.45, χ2wc = 13.39, P Value less than 0.05). CONCLUSIONS Compared with the 2002 survey, the infection rate of human soil-borne nematodes in Pengshan County shows a significant downward trend. The infection with roundworms is the main factor. The infection in the hilly areas is more serious, and the prevention and control work has a long way to go. The key areas for future prevention and control will be hilly areas.