You don’t need to go so far back. The 2009 swine flu pandemic vaccine caused Narcolepsy in about 10 / 100 000 vaccinated, all of which were children aged 12-16

You don’t need to go so far back. The 2009 swine flu pandemic vaccine caused Narcolepsy in about 10 / 100 000 vaccinated, all of which were children aged 12-16 (which is not a group included in trials, by the way). https://en.wikipedia.org/wiki/Pandemrix https://en.wikipedia.org/wiki/Pandemrix