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目的了解杭州市蛙、蛇类体内曼氏裂头蚴自然感染情况。方法在该市7个农村县(区)捕捉野生蛙、蛇,城区的5个县(区)从辖区农贸市场购买人工养殖牛蛙,进行逐只(条)解剖检查和鉴定曼氏裂头蚴。结果671只野生青蛙裂头蚴感染率为31.15%,感染强度为1～60条;3条野生蛇感染率达100%,感染强度为2～99条;而人工养殖的牛蛙裂头蚴均为阴性。裂头蚴可在蛙体内任何部位的肌肉寄生,其中以腿部肌肉寄生最为常见,占78.99%(391/495),而在蛇类则以寄生于皮下为主,占61.21%(71/116),不同大小青蛙曼氏裂头蚴感染率差异有统计学意义(χ2=6.561,P<0.05)。结论杭州市野生蛙、蛇体内裂头蚴感染率较高,分布广泛,存在曼氏裂头蚴病自然疫源地。因此,改变人们不良的生活方式和饮食习俗,开展曼氏裂头蚴病的预防工作十分必要。
Objective To understand the natural infection of Manchufin spores in frogs and snakes in Hangzhou. Methods The wild frogs and snakes were captured in 7 rural counties (districts) of the city. Artificial bullfrogs were bought from the farmers’ markets in the five counties (districts) of the urban area for dissection and identification of Manchurian schistosome. Results The infection rate of fission cell of 671 wild frogs was 31.15%, and the infection intensity was 1 ~ 60. The infection rate of 3 wild snakes was 100% and the infection intensity was 2 ~ 99. The artificially-cultured bullfrog larvae were negative. Sparganosis can be parasitic on muscle in any part of the frog body, of which the most common is the leg muscle parasitism, accounting for 78.99% (391/495), while the snake parasitized subcutaneously, accounting for 61.21% (71/116) There were significant differences in the infection rates of Sparganum mansoni among different size frogs (χ2 = 6.561, P <0.05). Conclusions The prevalence of sporozoite in Hangzhou wild frogs and snakes is high and widely distributed. There is a natural foci of Manifestational sparganosis. Therefore, to change people’s poor lifestyles and eating habits, to carry out prevention of man’s sparganosis is very necessary.