The molecular basis of antigenic drift was determined for the hemagglutinin (HA) of human influenza A/H3N2 virus. From 1968 to 2003, antigenic change was caused mainly by single amino acid substitutions, which occurred at only seven positions in HA immediately adjacent to the receptor binding site. Most of these substitutions were involved in antigenic change more than once. Equivalent positions were responsible for the recent antigenic changes of influenza B and A/H1N1 viruses. Substitution of a single amino acid at one of these positions substantially changed the virus-specific antibody response in infected ferrets. These findings have potentially far-reaching consequences for understanding the evolutionary mechanisms that govern influenza viruses.

https://science.sciencemag.org/content/342/6161/976.long

@microRNApro

No. Fauci is the liar. He obviously knows others have learned that "Koel et al. (p. 976) show that major antigenic change can be caused by single amino acid substitutions." http://science.sciencemag.org/content/342/6161/976.long

This means the variants caused by the vaccines were perfectly predictable.

https://www.sciencedirect.com/topics/neuroscience/antagomir

https://link.springer.com/article/10.1007/s00705-021-05152-5

https://twitter.com/microRNApro/status/1416973076512788482

>>14300461

I am guessing the vaccine sequence is known but there still needs to be a guess on mutation hot spot and sequence for flu.

So probably not.