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为了评价单纯改善卫生设施、单纯群众性治疗和改善卫生设施加群众性治疗3种不同方法防制土源性蠕虫的效果,作者选择蛔虫、钩虫和毛圆线虫感染率较高的15个村庄,对这些村庄约80%的人群,在开展防制之前(1968年)及防制后4年(1972年)用盐水漂浮定性法和司徒氏虫卵计数定量法进行了粪检。对其中1个村的人群在迁住新建的工人新村7个月后又进行了最后一次粪检。共分4组:第1组有4个村,共1,162人,采用改善卫生设施加群众性治疗。改善卫生设
In order to evaluate the effects of three different methods of improving sanitation, simple mass treatment and improving health facilities plus mass treatment to prevent soil-borne worms, the authors selected roundworms, hookworms and 15 villages with high prevalence of trichina. Approximately 80% of the population in these villages were screened by the Saltwater Floating Qualitative and Sturgeon Counting Quantitative Methods prior to control (1968) and four years after control (1972). In the other village, a final excrement inspection was carried out seven months after the relocation of the newly established workers’ village. Divided into 4 groups: Group 1 has 4 villages, a total of 1,162 people, using improved health facilities and mass treatment. Improve health facilities