[mangix]

I assume this includes the Johnson and Johnson vaccine.

Moderna is banned in certain european countries for people under 30 because of myocarditis risk.

[rsfern]

Those countries generally still offer pfizer for that age group, which has lower myocarditis risk than moderna (presumably because of the dose mostly). I think a lot of European countries also still use astra zeneca, not sure about J&J but they are similar platforms.