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作者对1989年春美国德克萨斯州休斯顿郊区1所高中和2所初中4200名学生中发生的一起麻疹爆发作了调查,以分析免疫失败的原因和预测麻疹疫苗再免疫的效果。 调查结果表明,3所学校共发生77例麻疹,高中发生71例,罹患率3.2％,2所初中共发生6例,罹患率0.3％。高中生按年龄分布,≤14岁者罹患率最高,为5.7％,≥17岁者罹患率最低,为2.1％,年龄愈小,罹患率愈高,年龄≤14岁者罹患率明显高于年龄≥17岁者。分析高中病例初免情况,12月龄内
The authors investigated an outbreak of measles that occurred in a high school in Houston, Texas, in the fall of 1989 and 4,200 students in two junior high schools to analyze the causes of the immunological failure and predict the effect of measles vaccine re-immunization. The survey results showed that a total of 77 measles cases occurred in 3 schools, 71 cases were found in high school and the attack rate was 3.2%. There were 6 cases in 2 junior high schools with an attack rate of 0.3%. High school students were distributed according to age. The highest attack rate was 5.7% in those ≤14 years of age, the lowest in ≥17 years (2.1%). The younger the age was, the higher the attack rate was. The attack rate was significantly higher in aged ≤14 years ≥ 17 years old. Analysis of cases of high school cases of initial exemption, 12 months of age