安徽省休宁县并殖吸虫感染情况调查

Investigation on Paragonimus infection status in Xiuning County,Anhui Province

目的了解安徽省休宁县并殖吸虫感染情况,为制定相应防治措施提供依据。方法根据境内主要水系长度及途经范围,选取分布在率水水系的溪口镇杭溪村、碜溪村,鹤城镇渔塘村,汪村镇汪村和山斗镇山斗村,以及横江水系的蓝田镇儒村共5个乡镇6个行政村作为调查点,对溪蟹、人群和犬的并殖吸虫感染情况进行调查。结果6个调查点共捕获溪蟹324只,其中65只感染并殖吸虫囊蚴,感染率为20.06%;横江水系调查村溪蟹感染率高于率水水系,差异有统计学意义(X^(2)=77.802,P<0.05)。汪村和儒村共检测515人,其中阳性39人,人群并殖吸虫抗体阳性率为7.57%,不同性别人群血清抗体阳性率差异无统计学意义(X^(2)=0.614,P>0.05);汪村、儒村人群血清抗体阳性率差异无统计学意义(X^(2)=1.124,P>0.05);≥35岁人群血清抗体阳性率高于<35岁人群,差异有统计学意义(X^(2)=6.969,P<0.05)。汪村和儒村的犬粪中均检测到卫氏并殖吸虫虫卵,检出率为19.23%(5/26)。结论安徽省休宁县为卫氏并殖吸虫病疫源地,等级为Ⅲ级。应加强居民健康教育,提高防控意识,做好犬类监测和管理,进一步加强对并殖吸虫病的防控。

Objective To understand paragonimus infection status in Xiuning County of Anhui Province for evidences to formulate corresponding prevention and control measures for this infection.Methods According to the distribution characteristics of water system in Xiuning County,six administrative villages under 5 townships,including Hangxi Village,Chenxi Village,Yutang Village,Wangcun Village and Shandou Villiage along lǜshui water systems,and Rucun Village along Hengjiang river systems,were selected as the survey sites,where infection of paragonimus was epidemiologically investigated in creek crabs,population and dogs.Results Sixty-five were identified to be infected with paragonimus metacercariae in the 324 creek crabs captured in the 6 survey sites,with a total infection rate of 20.06%.The infection rate was higher in Hengjiang river systems than in lǜshui water systems(X^(2)=77.802,P<0.05).A total of 515 people were tested in Wangcun Village and Rucun Village of which 39 were positive.The positive rate of paragonimiasis antibody was 7.57%(39/515)in the population,yet there was no significant difference in male and female as well as in population from Wangcun Village and Rucun Village regarding the serum positive rate(X^(2)=0.614,1.124;both P>0.05).The serum positive rate was higher in≥35 years old than<35 years old(X^(2)=6.969,P<0.05).Paragonimus westermani eggs were detected in the canine feces samples in Wangcun and Rucun villages,with a total infection rate of 19.23%(5/26).Conclusion Xiuning County represents the natural epidemic focus(rated as levelⅢ)of Paragoniasis in Anhui Province.Our findings suggest that it is necessary to strengthen the health education and raise awareness of prevention and control among local residents,and effectively have the canines managed and monitored in order to control paragonimiasis epidemic.