昆明、大理和景洪市售螺类广州管圆线虫感染情况分析  

The prevalence of Angiostrongylus cantonensis infecting snails for sale and angiostrongyliasis surveillance in Kunnan,Dali,and Jinghong

作　　者：汪丽波[1] 吴方伟[1] 杜尊伟[1] 姜进勇[1] 彭佳[1] 字金荣 

机构地区：[1]云南省寄生虫病防治所,云南普洱665000

出　　处：《中国病原生物学杂志》2015年第8期747-749,共3页Journal of Pathogen Biology

摘　　要：目的调查昆明、大理和景洪市售的食用螺类感染广州管圆线虫情况,探索和建立广州管圆线虫病防控机制。方法于2009-2014年每月2次对昆明、大理、景洪市场出售的食用福寿螺、圆田螺进行定点监测。每点采集福寿螺和圆田螺各50只以上,采用肺检法和均浆法剖检采集的螺类,统计广州管圆线虫感染情况。结果采集昆明、大理和景洪三地农贸市场销售的螺类51 693只,广州管圆线虫感染195只,感染率为0.38%。中华田园螺和铜绣环棱螺分别检测2 030和683只,未检出广州管圆线虫阳性螺;检测福寿螺48 980只。螺类以2011年感染率最高,为0.55%(68/12441),2012年感染率最低,为0.21%(19/9 164),不同年份感染率间差异有统计学意义(χ2=9.66,P<0.05)。全年均可检出广州管圆线虫感染螺类,不同季节感染率间差异有统计学意义(χ2=76.87,P<0.05)。2009-2014年间共报告广州管圆线虫病病例112例,疑似病例62例,临床诊断病例50例;112例病例中大理州报告44例、昆明市报告19例、景洪市报告49例;大理和昆明共处置3起广州管圆线虫病暴发疫情,报告病例17例,无重症和死亡病例。结论昆明市、大理市和景洪市农贸市场销售的福寿螺有广州管圆线虫感染,存在食品安全风险,应加强市场食品卫生的监督和健康教育以减少广州管圆线虫感染。Objectives To investigate the prevalence of Angiostrongylus cantonensis infecting snails for sale from Kunming,Dali,and Jinghong provinces and to examine and establish mechanisms for prevention and control of angiostrongyliasis. Methods From 2009-2014,markets in each city were selected as surveillance sites.The rate of A.cantonensis infection in Pomacea canaliculata and Cipangopaludina cathayensis was determined two times per month.More than 50 P.canaliculataor C.cathayensis were collected in each site.Lung microscopy was performed on all of the snails and snails were used to prepare a tissue homogenate.Infection with A.cantonensis was analyzed statistically. ResultsIn markets in Kunming,Dali,and Jinghong,51 693 P.canaliculata were collected and 48 980 snails were tested for infection with A.cantonensis.A.cantonensis had infected 195 snails,for a rate of infection of 0.38%.C.cathayensis had infected 2 030 snails while Bellamya aeruginosa had infected 683.No snails tested positive for infection with A.cantonensis.The highest rate of snail infection was in 2011（0.55%,68/12 441）while the lowest rate was in 2012（0.21%,19/9 164）.There were no significant differences in the rate of infection during the years studied（χ2=9.66,P〈0.05）.Snails were infected with A.cantonensis year-round,and there were no significant differences in the rate of infection by season（χ2=76.87,P〈0.05）.From 2009-2014,112 cases of angiostrongyliasis were reported,62 suspected cases of angiostrongyliasis were identified,and 50 cases of angiostrongyliasis were clinically diagnosed.Of the 112 cases,44were reported in Dali,19 were reported in Kunming,and 49 were reported in Jinghong.Dali and Kunming both dealt with 3from outbreaks of angiostrongyliasis.Seventeen cases were reported,none of which were severe or which led to death.Conclusion Snails sold at farmers＇ markets in the cities of Kunming,Dali,and Jinghong were infected with A.cantonensis.This poses a food safety risk,and surveillance of food hygiene in markets and health

关 键 词：广州管圆线虫 农贸市场 螺类 感染率 症状监测 

分 类 号：R383.19[医药卫生—医学寄生虫学]