麻疹疫苗对于控制乃至消灭麻疹流行,保障儿童健康,是一种有效的免疫制品。但对其免疫持久性目前认识尚不一致,多数资料证明,虽然国内几株疫苗其免疫持久性各异,但基本上可以看出,用麻疹疫苗进行人工免疫的免疫持久性是有限度的,当免疫力降至一定水平,保护作用随之消失,因此必 Measles vaccine for the control or even eliminate the epidemic of measles, to protect the health of children, is an effective immune products. However, the current understanding of its immune persistence is not consistent, most of the data show that although several domestic vaccine strains of different duration of their immunity, but basically can be seen that immunization with measles vaccine immune persistence is limited, when To a certain level of immunity, the protective effect disappears, so must