All subjects from 13 primary schools with high morbidity were bled to study the effect on preventing HAV.Results The protective rate of the vaccine was 98.1%,the 95% low confidence interval is 83.5%.

 
  • 结果 甲肝减毒活疫苗保护率为98 1%25,95%25可信限下限为 83 5%25。
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