美国最近发生的麻疹病例大部分为较大儿童,其中大多数接种过麻疹疫苗,被认为是有免疫力的。本文报道对22例临床诊断麻疹病例进行麻疹抗体的血清学分析的结果。应用血凝抑制(HI)试验作血清学分析,以下列三项指标作为血清学确诊为麻疹感染的依据:恢复期血清的 HI 滴度比急性期上升4倍以上;麻疹特异性 IgM 存在;在二次应答 The majority of measles cases in the United States are mostly children, most of whom have been vaccinated against measles and are considered immune. This paper reports the results of serological analysis of measles antibody in 22 cases of measles measles. The hemagglutination inhibition (HI) test was used for serological analysis. The following three indicators were used as the basis for serological diagnosis of measles infection: HI titer in convalescent serum increased more than 4 times than in acute phase; measles-specific IgM was present; Second response