1966年开始对麻疹易感儿实施麻疹疫苗接种,至今,当初的免疫对象已到了生育年龄。这些接受过人工免疫的妇女,所生婴儿的母传抗体是否与自然感染麻疹一样起保护作用,是当前应该回答的问题。近年来,在流行病学上注意到婴幼儿的罹患率:如山东临朐县九山乡发生麻疹流行,6个月龄以下发病5例,7～ Since measles measles vaccination started in 1966, the original immunization target has reached the childbearing age. Whether these mother immunized women, born infants, have the same protective effect as the naturally infected measles is the current question to be answered. In recent years, epidemiological attention to the incidence of infant and young child: such as the occurrence of measles epidemic in Jiu Shan, Lintao County, Shandong Province, 5 cases of onset less than 6 months of age, 7 ~