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根据我县1981至1986年乙脑流行情况,结合本县流行病学资料,利用回归分析对我县1987年乙脑流行趋势进行了预测。材料与方法1.乙脑疫苗年接种量(x_1)单位万 ml。2.前两年发病率之和(x_2),单位1/万。3.当年5、6月份降雨量之和(x_3)单位毫米。
Based on the prevalence of Japanese encephalitis in our county from 1981 to 1986 and epidemiological data of this county, the epidemic trend of Japanese encephalitis in 1987 was predicted by regression analysis. Materials and methods 1. Japanese encephalitis vaccine inoculation (x_1) unit million ml. 2. The sum of the incidence of the previous two years (x_2), unit 1 / 10,000. 3. The sum of rainfall in May and June of that year (x_3) is in millimeters.