https://www.cdc.gov/coronavirus/2019-ncov/vaccines/safety/my...
The UK Joint Committee on Vaccination and Immunisation (JCVI) currently doesn't recommend universal COVID-19 vaccinations for healthy children ages 12-15 because the health benefits are marginal. That guidance may shift as more data comes in.
https://www.gov.uk/government/news/jcvi-issues-updated-advic...
https://www.reuters.com/business/healthcare-pharmaceuticals/...
https://www.bbc.com/news/world-asia-58380867
https://koreajoongangdaily.joins.com/2021/08/24/national/soc...
https://www.freep.com/story/news/2021/07/02/jacob-clynick-pf...
https://www1.racgp.org.au/newsgp/clinical/nz-myocarditis-dea...
You need to add "short run" since these vaccines have not been tested long term. Not to say it is likely at all since other mRNA vaccines have not had long run issues, but to say there is "no evidence" is cheap when long run studies have not been conducted.
Please cite a case where this extraordinary claim has held true. Where a vaccine has caused a side effect not noticeable within the first year.
Globally hundreds of millions have been vaccinated and we've had enough data to get really precise numbers on even the absolute rarest of side effects; which are vanishingly rare and pale in severity and incidence to the disease in the wild.
The vaccines are not approved for children under 12 because the risks to young children from the virus are the lowest of any population group, so older groups were prioritized for efficacy and safety testing. It is being tested now in that age group (I know people with kids in the trial group) and will hopefully be approved shortly.
If this virus worked the way the flu does, doing the most damage to children and the elderly, then the vaccine would have been tested on children much sooner and would have been available to that group sooner. In that world, that's not because the vaccine was more dangerous to 25 year olds.