作者选取87名健康婴儿(其中6月龄27名,9月龄26名,12月龄34名)进行研究.6和9月龄婴儿先给予麻疹减毒活疫苗接种,至12月龄时再给予麻疹、腮腺炎、风疹(MMR)疫苗接种;12月龄婴儿只给予MMR疫苗接种.对72名婴儿采集双份血标本,采血时间分别为免疫前和免疫后12周,分别检测麻疹中和抗体、T细胞增殖和细胞因子产生情况. The study selected 87 healthy infants, of whom 27 were at 6 months, 26 at 9 months, and 34 at 12 months of age.66 and 9-month-old infants were vaccinated with attenuated live measles vaccine until 12 months of age MMR vaccination was given to 12-month-old infants, and duplicate blood samples were collected from 72 infants, the blood sampling time was before immunization and at 12 weeks after immunization, respectively, measles neutralization Antibodies, T cell proliferation and cytokine production.