Hypothetically speaking, if one of the variants was to evade the vaccines how soon do you think it would be between tweaking and redoing the whole thing again? It’s all well and good saying we can adjust the recipe but surely they would have to test how those who have had both doses would react to another formulation being introduced? Thoughts?
The vaccines were designed in a weekend after being sent the genetic profile of the virus.
In theory they can redesign it as quickly as that again.
The issue isn't redesigning the vaccine though.
Its ensuring its safe for roll out in humans without severe side effects. The vast majority of the time spent on the vaccines has been on trials whilst they started on manufacturing and production in parallel to that. We don't have to worry out manufacturing capacity but initial production may be slow. Whether they would need to go through the same level of testing for a new vaccine or could take short cuts I'm not sure.
Not extensively testing a new vaccine may undermine public trust in a new vaccine though and that could be a problem in its own right. And we may have issues over whether people who have recently had the oldet vaccine can tolerate the new one in quick succession.
And thats before you consider the logistics of rolling it out to the whole population.
But yes, its the government's sudden nervous undertones that are currently unsettling me.