为了应对有可能出现的在人与人之间传播的新型流感,日本厚生劳动省29日决定采用转基因技术开发疫苗,争取在五年后投入使用,开发费用约为10亿日元。禽流感疫苗通常是用过去流行的病毒放入鸡蛋培养制作,然而,由于新出现的禽流感毒性很强,使用原来的病毒具有危险性,因此有必要通过 Japan’s Ministry of Health, Labor and Welfare decided to adopt a genetically engineered vaccine to fight the potential new-to-human flu pandemic. The vaccine will be put into use after five years at a cost of about 1 billion yen. Bird flu vaccines are usually produced by putting past-used viruses into eggs and culturing them. However, since the emerging virus is highly toxic and using the original virus is dangerous, it is necessary to pass