| adverse events associated with mmr vaccines in japan. | the largest nationwide active surveillance of four measles-mumps-rubella (mmr) vaccines was conducted in japan. a total of 1255 pediatricians actively participated in the study, which comprised 8.6% of all members of the japanese pediatric society. the total number of registered recipients of mmr vaccines was 38 203. they were arbitrarily given one of the mmr vaccines produced by three makers (takeda, osaka city, kitasato minato-ku. tokyo and biken suita city, japan) or the standard mmr vaccine ... | 1996 | 8741307 |