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作者于1972年3月开始这项研究。从年龄5个月到40岁未接种过麻疹疫苗,也未输过血的健康人,采取血液标本,每人采血5～10毫升。共322份良好的血标本。用一种公认的血凝抑制(HI)试验,测定血清中麻疹的抗体滴度。从观察结果来看,13岁以上麻疹HI抗体为100%阳性。城市和乡村地区的感染率没有显著差别。学龄儿童半数以上(69%)有麻疹抗体。从学龄儿童起,随着年龄的增长而麻疹HI抗体不断上升。被检查的13岁以上少年,100%显出了麻疹免疫
The author started the study in March 1972. Blood samples were collected from 5 to 10 ml of blood each from healthy people who had not been vaccinated with measles vaccine from the age of 5 months to 40 years old. A total of 322 good blood samples. Antibody titers of measles in serum were determined using a well-established HI test. From the observation results, measles HI antibodies above 13 years of age were 100% positive. There was no significant difference in infection rates between urban and rural areas. More than half of school-age children (69%) have measles antibodies. From school-age children, measles HI antibodies are increasing with age. 100% of the 13-year-olds examined showed measles immunity