examined the data in theirjudgment was that in all of those aged 12 and above for the vaccines pfizer in madrona, they authorised these and they authorised them on the basis of their assessment of the efficacy, how effective they are and the side effects as understood from trials today. and they continue the process of continuing to look at those side effects. professor wei shen lim from thejoint committee on vaccination and immunistation said many factors had played a part in the decision an important question that arises is to ask, to what degree this vaccination reduces the time of school for children. the answer to that question is influenced by many