Only a small percent of the world is vaccinated with mRNA vaccines, thus it's not a global solution.
Some vaccines are already ineffective with the variants, e.g. Chile has one of the highest vaccination rates in the world, but doesn't have the disease under control.
Some vaccines are already ineffective with the variants, e.g. Chile has one of the highest vaccination rates in the world, but doesn't have the disease under control.
https://www.bbc.com/news/world-latin-america-57436861