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１９９８年１０月２６日 ,青海省职业病防治院组织扶贫医疗队赴岗冲乡 ,对５０名曾在本乡硅石矿和石英砂厂作业的农民进行免费体检 ,经检查 ,有１３人确诊为有０+ 改变及尘肺病 ,检出率为２６% ,其中０+ ４人、Ⅰ期４人、Ⅱ期４人、Ⅲ期１人 ,他们平均年龄４３岁 ,最小的３８岁
On October 26, 1998, the Qinghai Provincial Occupational Disease Prevention and Treatment Hospital organized an anti-poverty medical team to go to Chongchuang Township to conduct free physical examination for 50 farmers who had worked in their own silica and quartz sand factories. After examination, 13 people were diagnosed as having 0 + change and pneumoconiosis, the detection rate was 26%, of which 0 + 4, stage Ⅰ 4, stage Ⅱ 4, stage Ⅲ 1, their average age of 43 years, the youngest of 38 years