[WalterBright]

There's talk in the press about the vaccines being less effective on the mutations.

In any case, the more people who are vaccinated, the more likely a strain will arise that is not affected by the vaccine. This will reset all the vaccination efforts back to zero.

This is what I am referring to.

[maxerickson]

They have reduced but sufficient effectiveness against the mutations that are in the news.

I guess there's lots of room for arguing about definitions, but I think we don't go back to zero if there is a vaccine escape. The production capacity that has been built in the last year is a big step forward (and we can expand it), and we are building out the administrative capacity to get the vaccine in people's arms (capacity that won't just vanish).