The more accurate number is 290 million, which is how many people have got both doses. Our population is 1.3 billion, so we're still a long way away.
And every dose, be it the first or the second, has to be produced, bought, shipped and administered to a Human being who has been convinced to take it...
26.16% of that are children. (https://www.statista.com/statistics/271315/age-distribution-...)
So, about 1 Billion require 2 doses of vaccination.
Out of that 1 Billion are almost done.
A long way to go, but an impressive journey so far.
Assuming you mean 1b have had at least 1 dose, I don't think that's true. If 1b doses have been given, and ~300m people have had 2 doses (i.e. consumed 600m doses), that surely means ~400m doses were left. So a total of 700m people have had one or more doses.
> So, about 1 Billion [people] ...
and then
> Out of that 1 Billion are almost done.
To me, they're saying "out of 1 Billion people needing the vaccine, 1 Billion people are almost done".
Whatever the detail of what they meant, "almost done" is an odd way to describe being only (just under) halfway through the process.
Did you mean antibody count?
> 2 doses won't be "fully vaccinated" after one more year
Purely administrative decision