潜山县“海盐”防治丝虫病效果分析潜山县卫生防疫站（２４６３００）汪神松为了基本消灭丝虫病，我县采用分乡定量、海盐到户单疗程防治丝虫病，使微丝蚴率由疗前的１．８３％降至０．２９％，现将结果报告如下。１调查方法采用分层不等比例——两阶段整群抽样方法，在全... Qianshan County, “sea salt,” the effect of prevention and control of filariasis Qianshan County Health and Epidemic Prevention Station (246300) Wangsong Song in order to basically eliminate filariasis, the county using sub-rural quantitative, sea salt to household single treatment of filariasis, microfilariae The rate decreased from 1.83% before treatment to 0.29%, the results are reported as follows. 1 survey methods using unequal proportion of stratified - two-stage cluster sampling method, in ...