当北京科兴生物制品有限公司总经理尹卫东在1992年建立公司研制一种甲型肝炎疫苗的时候，从事疫苗研发的他甚至连“生物技术”这个术语都未曾听说过。
When Yin Weidong, general manager of the vaccine developer Sinovac Biotech, established his company to develop a hepatitis A vaccine in 1992, he hadn't even heard the term 'biotech'.
凡以前没有感染过或没有接种疫苗者，均可能感染甲型肝炎。在卫生条件差的地方生活的人被感染的风险较大。
Anyone who has not had been infected previously or been vaccinated can contract hepatitis A. People who live in places with poor sanitation are at higher risk.
目的大面积接种甲型肝炎（甲肝）疫苗，建立群体免疫屏障，控制甲肝周期性流行效果评价。
Objective To build the colony immune defence and to control the periodic epidemics of hepatitis A after a mass vaccination of live attenuated hepatitis A vaccine.
目的利用单克隆抗体代替常规的人、猴免疫血清进行甲型肝炎减毒活疫苗毒种外源因子检查及鉴别试验。
Objective to identify live attenuated hepatitis a (HAV) vaccine virus seed and detect adventitious agents, monoclonal antibody is used to neutralize instead of human and rhesus monkey immune serum.
甲型肝炎病毒TZ84毒株经2BS二倍体细胞培养制备成甲型肝炎灭活疫苗。采用普通狨猴和恒河猴进行疫苗的保护性研究。
Inactivated hepatitis A(HA) vaccine was prepared by culturing the strain TZ84 of HA virus in 2BS cells, and the immunogencity of it was studied in common marmosets and Macaca mulattas.
目的为了解接种甲肝疫苗以来虹口区甲型肝炎流行病学特征，为改进甲肝疫苗免疫策略提供依据。
Objective To supply science basis for improving on immune strategy of heptitis A vaccine, and to understand epidemiology of heptitis A in Hongkou since vaccinating heptitis A vaccine.
目的为了解接种甲肝疫苗以来虹口区甲型肝炎流行病学特征，为改进甲肝疫苗免疫策略提供依据。
Objective To supply science basis for improving on immune strategy of heptitis A vaccine, and to understand epidemiology of heptitis A in Hongkou since vaccinating heptitis A vaccine.
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