We know this from old data. Check page 12 of the . 5 cardiac related deaths in the vaccine group versus 1 in the control group.
We know this from old data. Check page 12 of the [supplement to the original Pfizer trial](https://www.medrxiv.org/content/medrxiv/early/2021/07/28/2021.07.28.21261159/DC1/embed/media-1.pdf). 5 cardiac related deaths in the vaccine group versus 1 in the control group.
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