根据河北省麻疹控制规划,张家口市于2002年8~10月对8月龄~5岁儿童进行了麻疹疫苗(MV)后续免疫。为了解免疫效果,对部分MV后续免疫前、后儿童进行了麻疹血清抗体监测,现将结果报告如下。1材料与方法1·1监测时间与对象于2002年8~10月采集辖区内8个县MV后续免疫前、后8月龄~5岁儿 According to the measles control plan of Hebei Province, Zhangjiakou City conducted a follow-up immunization against measles vaccine (MV) to children aged 8 months to 5 years from August to October 2002. In order to understand the immune effect, measles serum antibody monitoring was performed on children before and after partial immunization of MV, and the results are reported as follows. 1 Materials and methods 1.1 Monitoring time and objects In August and October 2002 collected 8 counties in the area before the follow-up immunization MV after 8 months to 5 years old children