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1991年起对广东省丰顺县和该县3个村改水降氟防制地方性氟中毒的效果进行长期监测。结果发现:丰顺县改水降氟防制措施已落实86.0%;安全、湖陂和大寨3个村的平均饮用水氟含量分别为0.4,3.1和0.4mg/L,8～12岁儿童的平均尿氟含量分别为1.0,4.1和1.7mg/L,儿童氟班牙患病率分别为59.4%,83.7%和66.1%,成人氟中毒症状和体征检出阳性率分别为44.1%,34.4%和31.8%,16～65岁人群氟骨症患病率分别为46.0%,86.0%和70.0%。
Since 1991, long-term monitoring of the effect of reducing fluoride on prevention of endemic fluorosis in Fengshun County and three villages in the county has been conducted. The results showed that the prevention and control measures for water and fluoride reduction in Fengshun County have been implemented by 86.0%; the average fluoride content in drinking water in the three villages of Hunan, Hubei Province and Dazhai was 0.4, 3.1 and 0.4mg / L respectively, while children aged 8 to 12 The average prevalence of fluorosis in children was 1.0, 4.1 and 1.7 mg / L, respectively. The prevalence rates of Fluoride in children were 59.4%, 83.7% and 66.1% respectively. The positive rates of fluorosis and signs in adults were 44.1% and 34.4% respectively % And 31.8% respectively. The prevalence of skeletal fluorosis among the population aged 16-65 was 46.0%, 86.0% and 70.0% respectively.