The older you are, the less likely myocarditis will be noticeable immediately.
A young teenager is (theoretically) very active, and any abnormality in their heart is going to cause concerning side effects and potentially panic, as it's something they have never experienced before.
A 30 something year old is more than like very sedentary, and the first signs (shortness of breath, lethargy, light headedness) are going to be perceived as more normal and even flu-like or just that shitty after-vax feeling everyone complains about.
I doubt that myocarditis is happening at any higher rate in the young, it's just not being diagnosed in the older.
The older you are, the less likely myocarditis will be noticeable immediately.
A young teenager is (theoretically) very active, and any abnormality in their heart is going to cause concerning side effects and potentially panic, as it's something they have never experienced before.
A 30 something year old is more than like very sedentary, and the first signs (shortness of breath, lethargy, light headedness) are going to be perceived as more normal and even flu-like or just that shitty after-vax feeling everyone complains about.
I doubt that myocarditis is happening at any higher rate in the young, it's just not being diagnosed in the older.