I'll throw in two anecdotes for what it's worth (maybe not much).
I'm familiar with two cases from friends/coworkers that had myocarditis after getting the covid vaccine.
First case was a 72 year old female. The day after the 2nd shot she called emergency services suffering from what she thought was a heart attack. Was taken into the ER, they ran blood labs and saw no evidence of cardiac infarction, Was admitted into the hospital for a day with myocarditis.
Second case was a 63 year old male. Also the 2nd of the original covid vaccines. On the day after the vaccine he started noticing chest tightness/pain that increased into day 2 at which point he went to the hospital. Labs said it was not a heart attack, was admitted to the hospital for observation, diagnosed as myocarditis.
I don't know that this proves anything beyond the fact that myocarditis after a covid vaccine isn't unheard of given that I know two cases of it in my sphere of acquaintances.
Interesting that you observed two people in your social network who developed myocarditis after the COVID vaccines. Anecdotally, that's a high prevalence, given that the social circle that one hears about (acquaintances, friends, and friends of friends) probably consists of around a 100 to 200 people. Two cases of myocarditis in 200 people is high.
In my social circle, I have not heard of any vaccine side effects, other than the usual feeling tired or having a fever for a day or two after the vaccination. One family member did report a long lasting mild pain at the injection site that lasted some weeks, but that's all I heard about.
Maybe these side effects are batch related. So when a bad batch is distributed in a particular city or region, people in that region will hear of lots side effects from their social network. Whereas when a region gets a good batch, people may hear very little in terms of side effect stories.
So this might explain why people have different views of the COVID vaccines. If your region got a bad batch, and you know several people who experienced side effects, then it may change your views on the safety of the vaccines.
If you run a query on the VAERS database, asking for the COVID vaccine batch numbers for people who suffered myocarditis after COVID vaccination, you get these results. These results only show the vaccine batch numbers where myocarditis was reported.
But looking down that table of batch numbers, you can see that for most batch numbers, there was only around 1 or 2 reported cases of myocarditis. But some batch numbers have 20, 30 or more cases. In one case, the Pfizer/Biontech batch number FE6975, there were 56 reported case of myocarditis.
So that suggests some batches may be worse than others. (Of course, this assumes each batch production run is of equal size, in terms of the number of vaccine doses distributed under that batch number).
If anyone wants to interrogate the VAERS database, you can run a query here.
Edited by Hip, 22 December 2022 - 11:23 PM.