南水北调引江济汉水利工程潜江流域血吸虫病疫情监测

Surveillance of schistosomiasis in areas along water transfer project from Yangzte River to Hanjiang River in Qianjiang basin

目的评估引江济汉水利工程对血吸虫病传播的影响,为制定相应防治对策提供科学依据。方法对引江济汉工程潜江境内沿线血吸虫病疫情及相关流行因素进行现场调查。结果工程区沿线有流行村33个,非流行村48个,流行村人、畜血吸虫感染率分别为0.42%和0.68%。流行村现有钉螺面积17.28hm2,活螺平均密度为0.043只/0.1m2,非流行村未发现钉螺。结论引江济汉工程建成后,应长期开展疫情监测,及时对相邻的兴隆河、汉南河等水系进行改造,从源头上防止钉螺扩散。

Objective To evaluate the impact of the water transfer project from the Yangtze River to the Hanjiang River on the transmission of schistosomiasis, so as to provide scientific basis for the development of control strategy. Methods A field investigation on snail status, the infection situation of human and cattle as well as related endemic factors was performed in the project areas of the Qianjiang basin. Results There were 33 endemic villages and 48 non-endemic villages along the water transfer project. In endemic villages, the infection rates of human and cattle were 0.42% and 0.48% , respectively. In the endemic area, the snail area was 17.28 hm2 , the mean density of living snails was 0.043 No./0.1 m2 , meanwhile, no snail was found in the non-endemic areas. Conclusion The surveillance on epidemic situation should be carried out for a long time in order to prevent the spreading of snails.