论文部分内容阅读
为探讨国产HB－Vac的流行病学效果及其对不同年龄组人群接种疫苗后的流行病学差异，我们于1987年1月～1992年3月对江苏省前浦地区949人进行了为期21～50个月的流行病学效果观察，结果报告如下。对象与方法一、观察对象用整群抽样法（样本数均按要求增加50％以上），接种疫苗前?
To investigate the epidemiological effects of domestic HB-Vac and its epidemiological differences after vaccination in different age groups, we conducted a total of 949 patients in Qianpu district of Jiangsu Province from January 1987 to March 1992 for a period of 21 ~ 50 months of epidemiological observation, the results are reported below. Subjects and methods First, the observation group with cluster sampling method (the number of samples are required to increase by 50% or more) before vaccination?