Abstract:

Objective To determine the status of cercariae of Schistosoma japonicum in water bodies of the Nanchang County
section of Poyang Lake region. Methods By using sentinel mice，the schistosome infectivity of water bodies was detected in 8
surveillance areas（59 experimental points in total）along the Fu River，Wuxing Farm，south branch of the Ganjiang River，and
middle branch of the Ganjiang River from June to July 2011. Results A total of 600 sentinel mice were placed in the experimen?
tal areas and 584 were retrieved，among which 577 mice were dissected and 1 mouse was infected with S. japonicum（4 worms col?
lected），with the infection rate of 0.17%. Conclusion By using the sentinel mouse method to survey the water body schistosome
infectivity，the status of Oncomelania snails should be mainly considered，and the infection rate of sentinel mice is affected by wa?
ter situation，water level，flow velocity，etc.

Key words: Schistosomiasis；Water body schistosome infectivity；Surveillance；Susceptible area；Nanchang County

摘要：

目的测定鄱阳湖区南昌县水域水体日本血吸虫感染性。方法2011年6-7月在南昌县抚河入湖口附近、五星垦殖场外湖堤脚、赣江南支和赣江中支入湖口附近8个监测区域共59个监测点，采用哨鼠试验测定水体血吸虫感染性。结果59个监测点共投放600只健康小白鼠，回收哨鼠584只，解剖哨鼠577只，检获阳性哨鼠1只，哨鼠血吸虫总感染率为0.17%，检获血吸虫成虫4条。结论鄱阳湖区采用哨鼠法进行水体感染性监测时应以螺情为依据，水情、水位和流速等因素会影响哨鼠感染率。

关键词: 血吸虫病；水体感染性；监测；易感地带；南昌县