Objective To shorten the observing time of the antibody attenuation trend after the measles live vaccine being inoculated,a power curve model of antibody level trend has been established and the antibody permanence been prospected in the paper.

• 目的建立接种麻疹减毒活疫苗(MV)后抗体水平变化趋势的幂曲线模型,预测抗体水平的持久性,缩短接种MV后抗体免疫持久性的实际观察时间。