作者先前发现 ,大多数对病毒活疫苗的过敏反应是由疫苗中作为稳定剂的明胶引起的。在作者发表明胶在过敏反应中所起的作用的资料后 ,日本的疫苗制造商已开始从病毒活疫苗中去除明胶。在此项研究中 ,作者试图估计在疫苗去除明胶之前的过敏反应发生率。日本的医生和疫苗制造商从 The authors previously found that most allergic reactions to live viral vaccines are caused by gelatin as a stabilizer in the vaccine. After the authors published data on the role of gelatin in allergic reactions, vaccine manufacturers in Japan have started to remove gelatin from live virus vaccines. In this study, the authors attempted to estimate the incidence of allergic reactions before the vaccine was gelatin removed. Japanese doctors and vaccine manufacturers from