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“七五”期间,在上海,湖南、河北和河南试点区内,对约200万人口中的全体新生儿实施了乙肝疫苗免疫接种。经免疫后1～4年的近期效果考核证明,新生儿中HBsAg阳性率由免疫前的10％降为1％,下降了90％,并以此形成了我国乙型肝炎免疫策略。为明确乙肝免疫后中、远期的预防效果及是否需要加强免
During the “Seventh Five-Year” period, all newborns of about 2 million people were vaccinated against hepatitis B vaccination in the pilot areas of Shanghai, Hunan, Hebei and Henan. The results of 1 to 4 years after immunization showed that the positive rate of HBsAg in neonates dropped from 10% before immunization to 1%, down by 90%, and formed the hepatitis B immunization strategy in China. In order to clarify the post-hepatitis B immunization, the long-term prevention effect and the need to strengthen immunity