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Health See other Health Articles Title: CDC Advisory Committee Presentation on Risk of Myocarditis From mRNA Vaccines ‘Flawed’ On June 23, the Advisory Committee on Immunization Practices at the CDC met to discuss ongoing reports of myocarditis in young people, particularly young men, after the second dose of mRNA vaccines. However, the purpose of weighing those harms and benefits contained misleading statements and data. In light of these recent reports, the committee was charged with weighing potential harms and benefits associated with second doses of mRNA vaccines. Despite the importance and gravity of the topic, and the high level at which this discussion was taking place, the presentation given to the committee for the purpose of weighing those harms and benefits was fundamentally flawed. Clinical presentation of myocarditis cases following vaccination has been distinct, occurring most often within one week after dose two, with chest pain as the most common presentation, said Dr. Grace Lee, co-chair of VaST. While misleading statements and data can be found throughout the slidedeck, we will focus on two slides which are most relevant to the decision that was facing ACIP on June 23. The first of these two slides, below, claims to evaluate the benefits and risks after dose 2, presenting what appears to be COVID-19-Associated Hospitalizations Prevented by dose 2, against Cases of Myocarditis which would be expected to be caused by dose 2. The second of these slides, below, presents Predicted cases prevented versus myocarditis cases per million second dose vaccinations. The presentation contains much flawed analysis and misleading framings of data. But above all, despite the fact that these slides purport to weigh risks versus benefits of dose 2 of mRNA vaccines, this analysis assumes that single doses of mRNA vaccines have 0% effectiveness at preventing COVID-19 associated hospitalization. Note that more than 95% of myocarditis cases detected by the CDC resulted in hospitalization it seems very likely that second doses of mRNA vaccines will cause more hospitalizations than they will prevent in 1217 year old boys, and whether that is also true for women will depend heavily on the rate at which the CDC is undercounting myocarditis cases. Post Comment Private Reply Ignore Thread
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