He's reiterating what we knew in 2022!
The proliferation of good quality observational studies on the potential adverse effects of COVID-19 vaccination has greatly increased our knowledge on myocarditis and pericarditis, and also, more recently, on arterial hypertension. According to ...
pmc.ncbi.nlm.nih.gov
12 November 2022
Conclusions
The benefits of vaccination over non-vaccination in terms of prevented hospitalizations and serious COVID-19 complications remain undisputable. In the age group, most at risk of vaccine myocarditis (12–29 years), for every 100 000 vaccinated, compared to about four more cases of myocarditis we have 56 fewer hospitalizations, 13.8 fewer admissions to intensive care and 0.6 fewer deaths.
16 We must not forget to compare different groups of subjects (vaccinated against unvaccinated, COVID against non-COVID) before drawing conclusions on the possible association between COVID vaccination and myocarditis. The rate of myocarditis in non-COVID and unvaccinated subjects is not zero, but is approximately 0.33 cases per million per day (98 cases per 296 377 727 person-days), compared with 0.78 cases per million for day in vaccinated subjects (117 cases per 149 786 065 person-days).
11,
12 This equates to a 2.35-fold increase in the risk of myocarditis in association with vaccination (Rate Ratio 2.45 (1.10–5, 02)), but with a rate of myocarditis in the comparison group (unvaccinated) not equal to zero. According to the ‘Centre for Disease Control’, an excess of observed cases, compared with those predicted on the basis of the historical trend of myocarditis (unvaccinated subjects), is observed only up to the age of 29 in females, and 49 years in the male sex (
https://cdc.gov/vaccines). To simplify the concept, it is not certain that the finding of a myocarditis in a subject affected by COVID, or that he has just been vaccinated, represents the sure demonstration that myocarditis is caused by COVID or vaccination. These figures bring to mind a famous cartoon of two British statisticians meeting: One asks the other: ‘How do you do?’ And the other replies without delay: ‘Compared to whom?’.