Nobody in my family has this deficiency, either. The good news is they also diagnosed me with mixed connective tissue disease and have me a script for... Hydroxychloroquine! Nobody has said shit about the vaccine, either.
No worries. It is more rare than they say. My Dr says about 1/4500 White people will have symptoms...
Have your doctor check you for "Selective IgA deficiency". This can cause both anaphylaxis and autoimmunity.
Loving the "Thomas the Tank Engine" taxidermy.