Zhuang Fang-Cheng
Zhuang Fang-Cheng
Institute of Viral Diseases
Zhejiang Academy of Medical Sciences
Hangzhou
China,
Biography
Institute of Viral Diseases, Zhejiang Academy of Medical Sciences, Hangzhou, P.R. China,he was published by many articles and pubmed publicationssubmitted abstracts are Background Live attenuated hepatitis A vaccine (H2 strain) is widely applied in prevention of hepatitis A epidemic in China and other countries now. It is essential to observe and confirm the vaccine immune efficacy, population antibody level and its persistent efficacy after mass immunization.