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为掌握山东省克山病1992年基本控制后的病情演变，选择具代表性的莒县和平邑两县，对近5年克山病发病情况、现存慢型克山病进行了调查，并对3～14岁易患人群1488例进行了全面检查重点调查，同时调查了内外环境硒及生活水平。结果显示近5年来慢型克山病累计发病率0．02／万，易患人群慢型克山病检出率0．13％，潜在型1．68％，现存慢型克山病患病率0．39％．无急型、亚急型克山病发病。病区居民发硒0．24～0．324mg／kg，人均收入750.0～1283.1元，人均口粮180．0～414．3kg。克山病病情处于基本控制后的稳定势态，病区居民生活水平较克山病高发年明显改善。
In order to grasp the evolution of Keshan disease in Shandong Province after the basic control in 1992, two typical counties of Shexian and Pingyi were selected to investigate the incidence of Keshan disease and the existing chronic Keshan disease in the recent 5 years. 3 to 14-year-old susceptible population of 1488 cases conducted a comprehensive survey of key investigations, both inside and outside the environment selenium and living standards. The results showed that in the past 5 years, the cumulative incidence of chronic Keshan disease was 0.02 / million, the prevalence of chronic Keshan disease in susceptible population was 0.13% and the potential was 1.68%. The existing chronic Keshan disease Rate 0.39%. No urgency, subacute Keshan disease. Ward residents selenium 0.24 ~ 0.324mg / kg, per capita income 750.0 ~ 1283.1 yuan, per capita ration 180.0 ~ 414.3kg. Keshan disease in a stable condition after basic control, Ward residents living standard high incidence of Keshan disease significantly improved.