You didn't want to finish the discussion last time about antigenically indistinguishable so I want to hit you in your face of bullying and pouting with the study which I remarked in my "spammy" arguments which you didn't want to have anything to do with:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4160575/
"This means that, predicting an antibody has high affinity for the immunizing antigen is extremely difficult if not impossible."

I understand you engaged into a discussion with false confidence and I took it as someone who was at least cursory informed but it turned out you had absolutely no rearing in the subject of immunization/vaccines. Maybe some redemption lies in digesting that study, as this pertains exactly to your "area" of interest.