I assume they mean minorities with respect to the country where the vaccine was developed.
However the main purpose of a vaccine is herd immunity.
If a large enough majority of the population become immune that we achieve herd immunity, that will still protect the minority of people for whom the vaccine didn't work.
However the main purpose of a vaccine is herd immunity.
If a large enough majority of the population become immune that we achieve herd immunity, that will still protect the minority of people for whom the vaccine didn't work.