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对枯饲料厂 12 0名生产工人进行了职业危害和健康调查。结果表明 ,工人在接尘后 2～8小时出现类似上呼吸道感染症状 ,脱离接触 2～ 4天症状消失 ,再接触后又可引起复发。通过血清沉淀素反应及动物实验均证实本组病例是由于吸入嗜热性放线菌而致的外源性变应性肺泡炎。
Occupational hazards and health surveys were conducted on 120 workers in the dry feed mill. The results showed that workers in the dust 2 to 8 hours after the emergence of similar symptoms of upper respiratory tract infection, disengagement from 2 to 4 days disappeared symptoms, re-contact can cause recurrence. Precipitin reaction by serum and animal experiments have confirmed that this group of patients is due to inhalation of thermophilic actinomycetes exogenous allergic alveolitis.