As mentioned previously, we are in the early days of fully understanding the science behind these vaccines. There are many reasonable speculations that the mech

As mentioned previously, we are in the early days of fully understanding the science behind these vaccines. There are many reasonable speculations that the mechanism of the CDC acknowledged cases of myocarditis and pericarditis from both the vaccine and the virus itself, are caused by spike proteins. The only way the vaccine can cause that is if those proteins aren't limited to the injection site. It's actually extraordinarily difficult to find reasonable discussions on this topic, since it seems people want to suppress any conversation that puts a potentially negative light on covid vaccinations, which pushes any reasonable discussion into the cesspool of conspiracy theorist dialogue. Here's a couple links: https://www.biorxiv.org/content/10.1101/2020.12.21.423721v1.full https://www.biorxiv.org/content/10.1101/2020.12.21.423721v1.... https://assets.researchsquare.com/files/rs-95587/v1_stamped.pdf https://assets.researchsquare.com/files/rs-95587/v1_stamped.... https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8162819/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8162819/ Not hard to search and find reasonable studies in early stages. Once again, I have to give a disclaimer to avoid the brigade: I am optimistic about these vaccines for many things, but I would not be surprised if in 5 years we have a body of knowledge that refutes the "overall really safe" label. Still a super valuable medical tool, I mean no one would take chemo drugs if they didn't have cancer, but people take them because it's overall better than not taking them if you have a treatable version of cancer!