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我们从1983年开始,对我县肺吸虫病进行了流行病学调查。结果如下:村民感染情况在选定3个大队的7个生产队中,肺吸虫抗原皮内试验464人,阳性263人,感染率为56、68%。中间宿主调查第1和第2中间宿主分别经中国科学院动物研究所鉴定,第1中间宿主为拟钉螺并在体内查到尾蚴和子雷蚴、经压片检查500只拟钉螺查尾蚴,其中阳性螺4只,螺的感染率为0.8%。第2中间宿主为锯齿华溪蟹。查蟹68只,并在蟹体中查到囊蚴,其中阳性蟹52只,蟹感染率为76、47%,在52只阳性蟹中查出囊蚴520个,蟹平均感染度为
Since 1983, we conducted an epidemiological investigation of paragonimiasis in our county. The results are as follows: Infection among Villagers Among the 7 production teams of 3 selected brigades, 464 were infected with the Pneumocystis carinii antigens intradermally, with a positive rate of 263, with infection rates of 56 and 68%. Intermediary host investigation The first and second intermediate host were identified by the Institute of Zoology, Chinese Academy of Sciences, the first intermediate host for the snail and cercariae and crayfish in the body to find corynebacteria, check 500 check snail cercariae, positive snails 4, snail infection rate was 0.8%. The second intermediate host is serrated Huaxi crab. 68 crabs were detected and metacercariae were found in the crab body, of which 52 were positive crabs. The infection rate of crabs was 76,47%. 520 cercariae were found in 52 positive crabs. The average infection rate of crabs was