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目的了解2013-2014年云南省大理市农贸市场出售的福寿螺中广州管圆线虫的感染状况及大理市广州管圆线虫病的发病情况,并为预防和控制广州管圆线虫病提供依据。方法每年1-12月,每月对固定监测点抽检2次(间隔2周),发现感染螺时跟踪监测1周,从大理市泰兴农贸市场两个摊位采购福寿螺54批次,每次各摊位1 kg,共计福寿螺7956只,均采用肺检法检测广州管圆线虫幼虫进行判定。同时对大理州人民医院和大理市第一人民医院的广州管圆线虫患者做症状监测。结果 2013年采集的3 481只福寿螺中有34只检出广州管圆线虫幼虫,平均感染率为0.98%,2014年采集的4 475只中检出58只,感染率为1.3%、2013年和2014年福寿螺感染率差异无统计学意义(χ~2=1.75,P>0.05)。来源于“洱源”和“瑞丽”的福寿螺感染率差异有统计学意义(χ~2=12.36,P<0.05)。2013-2014年共计个案调查广州管圆线虫病患者15人,临床诊断病例13人,均有螺类食入史。结论大理市市售的福寿螺部分感染有广州管圆线虫,有广州管圆线虫病人散发存在,应加强食品流通中的卫生监测及公众的健康教育,并进一步做好大理市广州管圆线虫自然疫源地调查工作。
Objective To understand the infection status of Anemarrhena giganteus and the occurrence of angiostrongyliasis in Guangzhou from 2013 to 2014 in Dali City, Yunnan Province, and to provide evidence for the prevention and control of angiostrongyliasis in Guangzhou. Methods From January to December every year, the fixed monitoring sites were sampled twice a month (interval 2 weeks), and the infection was detected and tracked for 1 week. 54 bats of Wapas were purchased from two stalls in Taixing Farmer’s Market of Dali City. Each stall 1 kg, a total of 7956 snake beetle, were detected by pulmonary detection of C. elegans larvae to determine. At the same time, Dali People’s Hospital and the First People’s Hospital of Dali, Guangzhou, adults to do symptoms monitoring. Results Of the 3 481 snails collected from 2013, 34 were found to be infected with C. elegans, with an average infection rate of 0.98%. Among 4 475 collected in 2014, 58 were detected, with an infection rate of 1.3%. In 2013 and There was no significant difference in infection rates of snails in 2014 (χ ~ 2 = 1.75, P> 0.05). There was significant difference in infection rates of snails (χ ~ 2 = 12.36, P <0.05) from “Eryuan” and “Ruili”. From 2013 to 2014, a total of 15 cases of angiostrongyliasis were surveyed in Guangzhou, and 13 cases were diagnosed clinically. Conclusion Some of the commercially available snails of Aphis gossypii in Dali City are infected with C. elegans and some of them are exuded. Therefore, health monitoring in food circulation and public health education should be strengthened, and the natural epidemic of C. elegans should be further improved Source of investigation.