荆州市沙市城区人群血吸虫感染调查

Survey of infectious status of schistosomiasis in Shashi urban population of Jingzhou City

目的了解血吸虫疫区城区人群血吸虫感染情况. 方法选择城区人群进行血吸虫血清免疫学检测,阳性者进行粪检及B超检查. 结果共检测1 754人,血清免疫学试验阳性129人,阳性率7.35%;受检男性1 070人,阳性人数85例,阳性率7.94%;受检女性684人,阳性人数44例,阳性率6.43%.年龄组以20～65岁居多,共124例,阳性率8.56%.职业以机关干部及企业工人居多,阳性率8.50%.129例阳性者粪检阳性2例,B超检查提示24例为血吸虫病肝,肝脾肿大者4例. 结论血吸虫疫区城区人群血吸虫抗体维持在较高水平,但粪检阳性率低,在低度流行区应采用综合查病方法普查.由于城区还有部分晚期血吸虫病人,偶有急性血吸虫感染发生,因此在血吸虫疫区应加强城区血防工作.

Objective To investigate schistosome infection among residents in urban area prevalent with schistosomiasis. Methods Serum immunological test was first carried out among the residents of Shashi District, Jingzhou, and then fecal examination and B nltrasonography were performed on positive ones. Results 129 out of 1 754 were positive in serum immunological test with the positive rate of 7.35 %. 85 of 1 070 males were positive with the positive rate of 7.85 %. 44 of 684 females were positive with a rate of 6.43%. The age of most cases varied between 20 and 65 years old, and 124 out of them were positive with the positive rate of 8.56%, while most cases were government employees or workers with the positive rate of 8.50% . For the 129 cases who were positive in serum immunological test, 2 were also positive in fetal examination, 24 were diagnosed as liver schistosomiasis and 4 as liver and spleen enlargement by B ultrasonography. Conclusion Although the level of antiby to schistosome in urban residents in schistosomiasis area remains high, the positive rate of fetal examination is low. Therefore, a comprehensive screening should be employed in general survey in the area at such a low epidemic level. In this kind of area, there are still schistosomiasis patients at advanced stage and a few occasional patients with acute schistosomiasis. The control of schistosomiasis in urban area prevalent with schistosmiasis should be also strengthened.