Strassburg M A, Greenland S, Fannin S L
Am J Public Health. 1979 Oct;69(10):1055-7. doi: 10.2105/ajph.69.10.1055.
Data were employed from confirmed measles case reports and an immunization survey to estimate the apparent effectiveness of measles vaccine in Los Angeles County in 1976. We evaluated the age-specific proportions of our case load arising from persons erroneously thought to possess immunity. Thirty five per cent of our cases claimed to have had prior measles vaccination, and over 60 per cent of these reported having written records. Since community measles control programs rely on immunization records as the principal screening tool, the shortcomings observed need to be recognized.
数据取自确诊麻疹病例报告和一项免疫调查，以估算1976年洛杉矶县麻疹疫苗的表观效力。我们评估了因被错误地认为具有免疫力的人群而导致的病例数按年龄划分的比例。我们的病例中有35%声称曾接种过麻疹疫苗，其中超过60%报告有书面记录。由于社区麻疹控制项目将免疫记录作为主要筛查工具，因此需要认识到所观察到的这些不足之处。
