Application of Curve Fitting on Forecasting the Incidence Rate of Type-B Encephalitis

应用曲线拟合对 乙脑发病率进行分析预测

They had been vaccinated against hepatitis B rabies and Type-B encephalitis from 2006 to 2008 .

2006至2008年，它们主要 用来接种乙肝、狂犬病和 脑炎疫苗。