а если он мутирует под влиянием вакцины ? 
https://www.medicalnewstoday.com/art...-delta-variant
AY.4.2 could be around 10% more transmissible than the original Delta variant, according to Prof. Francois Balloux, director of the University College London (UCL) Genetics Institute.
Mutations in spike protein
The new subvariant of the virus is distinguished by two mutations in its spike protein, called Y145H and A222V.
However, neither mutation is in the receptor binding domain, which is the part of the spike that binds to a particular receptor on human cells to infect them.
This suggests that the mutations are unlikely to cause major increases in transmissibility or help the virus evade the immune system.
In an update on Twitter, Prof. Balloux wrote: “Even if AY.4.2 is genuinely [around] 10% more transmissible, it does not explain much of the recent case rises in the U.K.”
He explained that if the new variant is 10% more transmissible and has a frequency of 10% in the population, this equates to only 1% more cases every 5 days.
As such, AY.4.2 could not have driven the recent increase in case numbers in the U.K., he explained.
In other words, the emergence of AY.4.2 is not on a par with the emergence of either Alpha or Delta, in terms of increased transmissibility.
In an interview with the Science Media Centre, in London, Prof. Balloux said:
Re: Коронавирус
Originally Posted by crazy-mike
