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1987年5～8月,保靖县水田乡丰宏村发生一批以下肢麻木为主要表现的病人。经调查确认为长期食用过度精白米,致维生素B_1缺乏引起多发性神经炎。
From May to August 1987, a group of patients with numbness of the lower limbs as the main manifestation occurred in Fenghong Village, paddy field, Baojing County. After investigation confirmed that the long-term consumption of excessive white rice, vitamin B_1 deficiency caused by polyneuritis.