@kithercbaby - HercKitty
More evidence that reinforces this:
@kithercbaby - HercKitty
Well done. The specific causation appears to be the igG4 (a subclass of immunoglobulin G). Several latest studies suggest exactly what you say in your post: https://mdpi.com/2076-393X/11/5/991 https://igor-chudov.com/p/booster-caused-immune-tolerance-explains