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I think it is more important for the Japanese government to show the Japanese people that we have done everything possible to prove the efficacy and safety of the vaccine to encourage the Japanese people to take the vaccine, so at the end of the day we might have started slower, but we think it will be more effective. Half of the recipients of the first shots will keep daily records of their condition for seven weeks ; that data will be used in a health study meant to inform people worried about the side effects. Studies on tens of thousands of people of the Pfizer vaccine — and others being administered currently in other countries — have found no serious side effects.