According to the article -—
“ June 2021 report from the Associated Press documented several severe responses to the Pfizer vaccine course, citing a medical study published by a pediatric journal which highlighted lethal heart issues arising in the boys in the days immediately following their vaccination.”
The cited article, from Stat News, says nothing about lethal issues and the Pediatrics article they were discussing says the benefit of young people getting the vaccine greatly outweighs the risk.
This is pure misrepresentation by National File.
When people have to deceive in an attempt to convince you it should tell you something.