The fourth vaccine to receive approval in parts of Europe, the Novavax shot, hasn't had any reports that I could find of myocarditis.
Disclosure : I hold no position in NVAX, short sell or options. I also don't hold Takeda Pharmaceuticals, at either their US listed shares or CFDs of their Tokyo listing.
There has never been a successful coronavirus vaccine ever in history.
The spike protein is inherently pathogenic in every vaccine on market. They are all dangerous.
The mRNA injection also has the lipid nanoparticle that travels throughout the body. This is also a dangerous substance. This ingredient is likely why we have been seeing so many myocarditis cases.
I'm more inclined to believe that the danger from the nanoparticle had to do with it delivering the mrna to places it does not belong, such as the heart and brain, rather than the mrna itself