What does this mean?

No.13639292 ViewReplyOriginalReport
https://www.medrxiv.org/content/10.1101/2021.08.30.21262866v1
>Post-vaccination CAE rate was highest in young boys aged 12-15 following dose two. For boys 12-17 without medical comorbidities, the likelihood of post vaccination dose two CAE is 162.2 and 94.0/million respectively. This incidence exceeds their expected 120-day COVID-19 hospitalization rate at both moderate (August 21, 2021 rates) and high COVID-19 hospitalization incidence.
How different is the heart of a man in his early twenties to when he was a teenager? I'm scared to get the jab bros, I need my heart to live.