2009-2013年江苏省金湖县广州管圆线虫病纵向监测

Longitudinal monitoring of angiostrongliasis cantonensis in Jinhu,2009-2013

目的了解江苏省金湖县广州管圆线虫传播宿主分布情况和感染状况,为制定广州管圆线虫病监测方案提供依据。方法选择金湖县前锋镇为纵向监测点,对监测点的野外现场、螺类养殖场、餐饮场所、自由市场等4类场所进行广州管圆线虫终末宿主和中间宿主调查。解剖鼠类心、肺,检查心血管中广州管圆线虫感染情况。采用"肺检查法"结合"酶消化法"或"匀浆法"检测螺类及蛞蝓、蜗牛。利用统一问卷调查当地人群广州管圆线虫病防治知识知晓情况及生食肉情况。结果 2009-2013年调查野外现场15个,餐饮场所21家,螺类养殖场3家,农牧市场9家。捕获褐家鼠11只,黑线姬鼠38只,抓获铜锈环棱螺560个,中华圆田螺101个,蛞蝓494条,蜗牛468个,经解剖和检验未发现广州管圆线虫成虫和幼虫。当地市场上有出售大田螺等现象,居民有吃田螺、青蛙、蟹等习俗。调查目标人群326人,广州管圆线虫病防治知识知晓率为32.82%。学生防治知识知晓率高于当地居民(χ2=17.83,P<0.01)和农牧市场人员(χ2=9.94,P<0.01),差异均有统计学意义。6.44%的人群曾经有生食或半生食鱼、虾史,各人群间生食史率差异无统计学意义(χ2=2.85,P>0.05)。结论金湖县虽为广州管圆线虫病非流行区,但仍应加强宣传教育,注意饮食卫生,以预防广州管圆线虫病的暴发流行。

Objective To understand the distribution and infection status of angiostrongyliasis transmission host in Jiangsu province Lake County and provide the basis for the development of angiostrongyliasis disease monitoring programs.Methods Qianfeng town of Jinhu county was selected as the longitudinal monitoring point. At the monitoring point,the field site,snail farms,dining places,and free markets were monitored for the definitive host and intermediate host of Angiostrongylus cantonensis.The rodent heart,lung and cardiovascular system were dissected and examined for Angiostrongylus cantonensis infection. ＂Lung test＂,＂enzymatic digestion＂ and ＂homogenization test＂ were used to detect Angiostrongylus infection in snails and slugs.An uniform questionnaire was used to investigate the angiostrongyliasis prevention knowledge and awareness,and the situation of consuming raw meat among the local population.Results 15 fields,21 restaurants,3 snail farms and 9 farmer markets were investigated in 2009-2013..11 Rattus norvegicus,38 Apodemus agrarius,560 Bellamya aeruginosa,101 Cipangopaludina chinensis,494 slugs,and 468 snails were caputered for examination. After dissection and inspection,no Angiostrongylus adult worms and larvae were found. Big snails were selling in the local market and residents have the customs to eat snails,frogs,and crabs.326 people were surveyed for their knowledge and awareness of angiostrongyliasis disease prevention and control,with a passing rate of 32.82%;the passing rate of students was significantly higher than those of the local residents（χ2=17.83,P 〈0.01）and pastoral marketing staff（χ2=9.94,P〈0.01）. 6.44% people had history of eaten raw or half cooked fish and shrimp.There were no significant differences of rates of eating raw or half cooked fish and shrimp among different groups of people（χ2=2.85,P〉0.05）. Conclusion Although the Jinhu county is not an angiostrongyliasis endemic area,but should strengthen publicity and education on the attention to food hygiene to prevent angiostrongyliasis outbreak.