梧州市长洲岛人体土源性线虫感染监测结果分析

Surveillance results of human soil-transmitted nematodes in Changzhou Island in Wuzhou City

目的了解梧州市长洲岛人体土源性线虫感染及变化情况,为制定该地区人体寄生虫病防治策略提供科学依据。方法从1993年起选定梧州市郊长洲岛为监测点,对3周岁以上的常住居民进行基线调查,采用改良加藤厚涂片法(Kato-Katz法)粪检蛔虫、钩虫、鞭虫虫卵,分别计算3种虫卵的感染率及感染度(EPG),收集受调查者的性别、年龄和文化程度等资料,并将本次调查结果与前3次调查结果进行比较分析。结果人体土源性线虫感染率为6.29%,其中蛔虫感染率最高为4.52%。2011年土原性线虫感染率比1993年、1998年和2002年分别下降92.11%、83.79%、60.11%。结论1993年～2011年监测点人群土源性线虫感染率呈下降趋势,应加强寄生虫病知识健康宣传教育,以便有效地控制土源性线虫病。

Objective To ascertain the infection status and changes of human soil-transmitted nematodes in Changzhou Island, Wuzhou city, and to provide a scientific basis for control and prevention of human parasitic disease. Methods The baseline survey was carried out in Changzhou Island, the surveillance site selected in Wuzhou since 1993. Inhabitants with an age of 3 years or above were included in the survey. Kato-Katz was applied in examining the eggs of roundworm, hookworm and whipworm in the fecal samples. The infection rate and EPG （egg per gram） of these three different eggs were calculated respectively. The basic information from the respondents was collected, containing gender, age and education level. Comparative analysis of the results was made between the present investigation and three previous ones. Results The infection rate of human soil-transmitted nematodes was 6.29%, among which the infection rate of roundworm was up to 4.52%. The infection rate of human soil-transmitted nematodes in 2011 decreased to 92.11%, 83.79%, 60.11% respectively, compared with that in 1993, 1998 and 2002. Conclusion The infection rate of soil-transmitted nematodes is decreasing in the surveillance site from 1993 to 2011. Health education on prevention of parasitic diseases should be strengthened so as to reduce the infection rate and consolidate the preventive effect of soil-transmitted nematodes effectively.