Post V Myocarditis (heart damage that increases life long death risk)

Resources / References:

A prospective study of the incidence of myocarditis/pericarditis and new-onset cardiac symptoms following smallpox and influenza vaccination.

https://pubmed.ncbi.nlm.nih.gov/25793705/

Myocarditis Following Immunization With mRNA COVID-19 Vaccines in Members of the US Military

https://jamanetwork.com/journals/jamacardiology/fullarticle/2781601