永胜县山区鼠类感染日本血吸虫调查研究

目的:了解鼠类的种群组成,探讨鼠类在血吸虫病传播上的作用。方法:鼠类分类鉴定,解剖肉眼观察肝脏表面的日本血吸虫虫卵结节,取结节压片镜下观察虫卵。用尼龙袋集卵孵化法作定性检查,改良加藤法作虫卵计数。同时采用常规方法对人群和家畜进行调查。结果:捕获鼠类3目3科6属10种713只,以褐家鼠为优势种,占67.88％。检验710只,其中1只大足鼠自然感染日本血吸虫,鼠类感染率为0.14％,EPG(x)为0.32。人群感染率为5.93％,EPG(x)为1.29。家畜感染率为1.05％,EPG(x)为0.04。结论:鼠类仅为偶然宿主。在该地血吸虫病的传播上无明显作用。

Investigation on Schistosoma japonicum Infection in Rodents in Mountainous Valley Region of Yongsheng County

For studying significance of rodents on schistosomiasis transmission in moun-tatainous valley region,a routine investigation was carried out in rodents,humans and stocks about schistosoma japonicum infection in 10 villages of Yongsheng County in October, 1999. Altogether 713 rodents were captured in mountainous valley region of Yongsheng County. They were identified as 10 species,belonged to 6 genera,3 families,3 orders. The dominant species were R. norvegicus ,its component proportion was 67. 88%. Among 710 rodents being tested, 1 R. nitidus was infected with Schistosoma japonicum, the positive rate of stool and EPG(x-) Were 0. 14% and 0. 32 for rodents,5. 93% and 1. 29 for humans,1.05% and 0.04 for stocks. The results showed that the rodents does not obvious function on schistosomiasis transmission in mountainous valley region of Yongsheng.