method of descriptive epidemiology 描述性流行病学方法
Methods By descriptive epidemiology method, analyze the distribution of virus hepatitis.
方法用描述流行病学方法，分析病毒性肝炎三间分布变化趋势。
Methods Analyzed the incidence of mumps in Chuanshan District from 2005 to 2009 and used descriptive epidemiology method.
方法采用描述性流行病学分析方法对2005-2009年船山区流行性腮腺炙发病情况进行分析。
Methods The data about HFMD in Xuchang from 2009 to 2010 were collected, and then analyzed by descriptive epidemiology method.
方法运用描述流行病学的方法，对2009-2010年许昌市手足口病数据进行分析。
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