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我省沿河县纸坊村1985年5～8月发生一起原因不明的流行病,症状特殊,罹患率和病死率分别高达15.62％和10.08％。因其病因不
An epidemic of unknown cause has occurred in Zhanfang village, Yanhe County, from 1985 to August 1985, and its attack rate and case fatality rate were as high as 15.62% and 10.08% respectively. Because of its cause is not