There is nothing new about origin. China wasn't transparent, but it is more likely of animal origin. Vaccine responsees are looked at by the CDC and all notings are out there along with a bunch of other stuff.

Here are the reporting requirements - cdc.gov: Submitting a Vaccine Adverse Event Reporting System (VAERS) Report and Using VAERS Data | Vaccine Safety Systems

There are varying informed opinions in medical science. That's the way it is. Medicine is 70-80% science and 20-30% art. I have skimmed quantifications and studies on the myocarditis. 90-95% of the myocarditis reported was fleeting, it fixed itself and was temporary. Then what we have are very intelligent guesses that some reactions were caused by X ingredients, so the Manufacturer changed to an ingredient deemed safer. But shouldn't pretend that no analysis or follow up was done.

Chris is making comments that sensationally appeal to the right and conspiracy theorists. He is on my "suspect" list.