Persistent efficacy of live attenuated hepatitis A vaccine （H2-strain） after a mass vaccination program - ZHUANG Fang-cheng QIAN Wen MAO Zi-an GONG Yue-ping JIANG Qi JIANG Li-min CHEN Nian-liang CHAI Shao-ai MAO Jiang-sen (Chinese medical journal, 2005)
Keywords: 免疫机制; 甲型肝炎; 疫苗接种; 血液检查