just to put numbers on that - 28M children[1] * $20/dose [2] * 2 doses >= $1.1 B

Considering you can't sue the vaccine manufactures for anything and the vaccines are being mandated in various venues, they are definitely a "safe and effective" way to make lots of money...

[1] https://www.usnews.com/news/health-news/articles/2021-10-20/...

[2] https://www.managedhealthcareexecutive.com/view/the-price-ta...