Eight out of 21 deaths (38%) were sudden cardiac death (SCD) attributable to COVID mRNA vaccine-related myocarditis (VRM) proved by an autopsy; this is what Cho et al. found (European Heart Journal)

all cases of SCD attributable to VRM were aged under 45 years and received mRNA vaccines; South Korean Government funded study

https://academic.oup.com/eurheartj/article/44/24/2234/7188747?login=false

‘Vaccination-related myocarditis incidence was highest in males between the ages of 12 and 17 years (5.29 cases per 100 000 persons) and lowest in females over 70 years (0.16 cases per 100 000 persons).

Severe VRM was identified in 95 cases (19.8% of total VRM, 0.22 per 100 000 vaccinated persons), 85 intensive care unit admission (17.7%), 36 fulminant myocarditis (7.5%), 21 extracorporeal membrane oxygenation therapy (4.4%), 21 deaths (4.4%), and 1 heart transplantation (0.2%).

Eight out of 21 deaths were sudden cardiac death (SCD) attributable to VRM proved by an autopsy, and all cases of SCD attributable to VRM were aged under 45 years and received mRNA vaccines.’

‘a 33-year-old man who died just one day after receiving a second dose of Moderna’s vaccine and a 30-year-old woman who died three days after receiving a first dose of Pfizer’s shot.’

https://www.theepochtimes.com/health/some-sudden-deaths-caused-by-covid-19-vaccines-autopsies-confirm-5313234