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KaiKai's avatar

Thank you for this. There is a persistent pattern of delayed responses to vaccine safety signals here in the US. This is probably because our system is is limited in being able to pick up adverse events. We have consistently taken our cues from Europe.

I am not so sure the Moderna mRNA vaccine is causing more cases of myocarditis in the US. Just looking at VAERS numbers (I know these are not vetted, but they are the only public info we have) Pfizer has a unadjusted myocarditis rate of 31/1 million doses. Moderna is 15/million and Janssen is 13/million. Pfizer's rate may be higher because they are authorized for use from age 5 upward.

During the October 22 ACIP meeting a myocarditis update showed the rates of myocarditis by age and vaccine.

16-17 males and females the risk was 37.4/million second dose Pfizer.

18-24 males and females for both Moderna and Pfizer at 18-20/million second dose.

When males were stratified for age 12-15 were 39.9/million second dose Pfizer.

16-17 males 69.1/million second dose Pfizer.

18-24 males 36.8/million second dose Pfizer and 38.5/million second dose Moderna

I think the data is suggesting both mRNA vaccines cause myocarditis in young males equally whether 30 micrograms or 100 micrograms of mRNA.

I agree there needs to be studies looking more deeply at this problem.

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CurrencyPrivacy's avatar

I might be reading this wrong, but is the first sentence of the last paragraph backwards?

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