Here is a submission to the FDA by a pediatric specialist, also a rhuematologist, Dr Patrick Whelan, with his concerns about the mRNA vaccines. In a nutshell, he thinks the spike protein alone, not the virus, could cause a lot of damage via the endothelial cells.

Maybe this could explain all the heart attacks in the aged care homes, and some of the heart attacks among younger patients?

"" Before any of these vaccines are approved for
widespread use in humans, it is important to assess in vaccinated subjects the effects of vaccination on the
heart (perhaps using cardiac MRI, as Puntmann et al. did).""

He also particularly warns against giving this vaccine to children, which is untested of course. Click on the attachment in the document below to see the actual letter that was sent to the FDA.

I have added a snip of the letter in case facebook blocks entry to the link below.
https://beta.regulations.gov/document/FDA-2020-N-1898-0246.