[telman17]

I don't have the source available but was told that the concern was there is some kind of evidence that the vaccine had a low chance of causing long term heart issues in some children, which is why it hasn't been approved for children under 5 yet.

[Izkata]

Risk of myocarditis (heart inflammation) in men under 40 years old is higher after 2 doses of an mRNA vaccine than from SARS-CoV-2 itself, particularly after Moderna where it's many times higher: https://vinayprasadmdmph.substack.com/p/uk-now-reports-myoca...

Article is an overview of the most interesting findings; in particular I'm referencing the second image, which is copied directly from a study that's linked right above it.

[timcederman]

No, it hasn't been approved because the dose they tested didn't produce enough of an immune response.