Figure 1O/E ratios of myocarditis and pericarditis in the first 1–7 days of receipt of any dose of COVID-19 mRNA vaccine by age group and sex in three large health plan databases
從這張圖看,豎直虛線表示與以往發病率一致,沒有變化。豎直虛線右邊表示發病率增加。根據橫線下標數字,疫苗注射後,總體發病率與以往發病率的比值約為2 ,也就是增加1倍。
他們的數據來源是 Optum, HealthCore, Blue Health Intelligence, and CVS Health,誤診可能性不大。總之,我認為疫苗後心肌炎發病率上升的結論是可靠的,但總體發病率仍很低。
另一個法國的研究發現情況更為嚴重,疫苗後心肌炎發病率增加更多,見:Age and sex-specific risks of myocarditis and pericarditis following Covid-19 messenger RNA vaccines, https://www.nature.com/articles/s41467-022-31401-5