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沿河县地处黔东北山区,原为班氏丝虫病高度流行区,防治前人群微丝蚴率为24.2％(67 135/277262)主要传播媒介致倦库蚊,自然感染率为27.3％(1245/4560)经过连续3次查治和全民普服海群生药盐,微丝蚴率降到0.3％(178/59 755),以大队(村)为单位达到了基本消灭丝虫病的标准。为了评价防治效果,监测此后的流行动态,我们于1977～1984年持续8年对残存传染源和媒介传播情况进行了纵向和横向观察。
Yanhe County is located in mountainous areas of northeast Guizhou and was originally a highly endemic area of Bancroftian filariasis. The population of microfilariae before population control was 24.2% (67 135/277262), the main vector of Culex pipiens quinquefasciatus. The natural infection rate was 27.3% (1245/4560) After three consecutive visits to Zhazhi and the universal acceptance of sea salt medicine, the microfilariae rate dropped to 0.3% (178/59 755) and reached the level of basic elimination of filariasis by unit of brigade (village) standard. In order to evaluate the effectiveness of prevention and control and to monitor the prevalence thereafter, we conducted vertical and horizontal surveys of the remaining sources of infection and transmission of media for eight years from 1977 to 1984.