I'd go further and say to anyone under 20 - If you have to be 21 to drink alcohol, you should have to be 21 to get the 'clot shot'. Lapstrake is correct.

For every 19,000 kids that get the vaccine, on average one child will die from a bad reaction. Kids that had zero chance of dying from the Wuhan virus.

There are other reasons not to give the 'clot shot to adolescents: https://knowledgenuts.com/2014/07/25/the-difference-between-teenage-brains-and-adult-brains/

Teens are not as skilled at making decisions that have long-term consequences as adults are, as their brains have not developed as much...