As shown in this graph below, the descendants of BA2.86/JN.1 do indeed have a transmission advantage over JN.1. However, they are increasingly finding it difficult to gain ground on JN.1, as evidenced by the decreasing exponential growth of recently emerged variants.
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Due to the persistent dominance of JN.1, virus transmission occurs too slowly, or in other words, the immune pressure from highly C-19 vaccinated populations on virus transmission remains too high.
The only possibility I see for the virus to break through this pressure is a sudden and drastic change in the glycosylation profile of the spike protein.
This change will be of such a nature that it enables the virus to overcome the inhibition of virus virulence by non-neutralizing antibodies. In this way, the virus will be able to spread and replicate fully, not only from one individual to another, but especially within the same vaccinated person.
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