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>Another thing to consider is that the myocarditis rate from C19 itself may exceed that of the vaccine, which would basically refute the argument against vaccin
by twofornone 5y ago
>Another thing to consider is that the myocarditis rate from C19 itself may exceed that of the vaccine, which would basically refute the argument against vaccination
No, because you need to consider not just the odds of getting myocarditis from covid vs vaccine (Pc:Pv), but the bayesian probabilities of getting infected (Pi) or vaccinated (1) and then getting myocarditis, such that the full risk analysis would look more like Pi*Pc:Pv[1]. Point being when you are talking about vaccinating the entire population, you can easily end up in a position where there are more cases of heart inflammation from fully vaccinating the population than simply letting the virus run its course. I believe the term is relative risk reduction but don't quote me.
1. This isn't quite right, there should be a 1-x term or two in there somewhere to account for the probabilities of getting vaccinated/infected and not developing myocarditis, but its been a few years since my probability course...In any case the point still stands, that the vaccine may be less likely to cause heart inflammation does not imply that it would produce fewer cases overall if a sizeable proportion is vaccinated. To properly estimate that you need an accurate estimate for the myocarditis rate from both covid and vaccine, which I don't think anyone has.
- nojokes 5y agoThis is true and if it was flu kind of virus with very low reproduction number, it would be right but Delta variant has very high reproduction number and it is guaranteed to infect eventually almost everyone who is without immune response against it. There is also this fact that myocarditis has high prevalence among teenage boys (even CDC might underestimate it) and it looks like it is caused by some form of immune reaction and its occurrence is immune reaction size dependent (Moderna causes more myocarditis than Pfizer that causes more than AstraZeneca). It allows to postulate that it might be that the people who get myocarditis after vaccination have high risk of getting it after infection.