The Red Cross said so, until they didn’t. I saw it with my own eyes right on their web site that the vaccine wiped out existing antibodies. DH saw it too, as did several people here.
Of course that has changed now on their web site and “fact checked” and called conspiracy theory all over the internet. But I saw it. On the Red Cross web site.
” I saw it with my own eyes right on their web site that the vaccine wiped out existing antibodies.”
According to this study the vaccine enhances acquired. immunity.