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为了给陕西省政府提供制定地氟病防制规划的依据 ,对位于不同自然地理环境的定边、蒲城和泾阳 3县饮水型地氟病区的环境氟含量、病情和改水进展等情况进行了调查。结果显示经过 2 0年的不懈努力 ,3县已有 5 0 .17%的病区人口进行了改水。改水后环境氟含量和病情均有明显降低 ,与 1980年相比 ,水氟含量下降了 5 0 .60 % ;儿童氟斑牙患病率下降了 3 8.12 % ;3d度氟骨症患病率下降了 78.64 % ,再次证明改水预防饮水型氟中毒是行之有效的重要措施。同时调查结果也提示 ,改水后符合国家卫生标准的水样仅占 3 1.12 %。本次以水氟含量划定的病区与 1980年划定的病区相比 ,符合率为 65 .3 8%。因此认为要制定全省改水防制规划 ,为防止陈旧的资料造成误导 ,应重新进行一次流行病学调查 ,保证资料的科学性。调查结果还提示水氟含量受井型和井深的影响较大。
In order to provide the basis for the Shaanxi provincial government to formulate the prevention and control plan of endemic fluorosis, the environmental fluorine content, disease condition and water improvement progress of drinking water-type endemic fluorosis area in Dingbian, Pucheng and Jingyang 3 counties in different natural geographical environment We conducted a survey. The results showed that after 20 years of unremitting efforts, 50.17% of the ward population in 3 counties had been rehabilitated. Compared with 1980, the fluorine content in water decreased by 50.60%; the prevalence of dental fluorosis in children dropped by 3. 8.12%; the incidence of 3D skeletal fluorosis Rate dropped 78.64%, once again proved that water to prevent drinking water fluoride poisoning is an effective measure. At the same time, the survey results also suggest that only 3 1.12% of the water samples that meet the national health standards after water change. The ward delineated by the water fluoride content compared with the ward delineated in 1980, with a compliance rate of 65.38%. Therefore, it is considered that to formulate plans for water diversion and prevention in the whole province and to prevent misleading the outdated data, an epidemiological investigation should be conducted again to ensure the scientificity of the data. The survey results also suggest that the fluorine content in the water is greatly affected by well type and well depth.