The updated boosters have only been available at-large for ~2-3 months. https://www.pfizer.com/news/press-release/press-release-detail/pfizer-and-biontech-anno

The updated boosters have only been available at-large for ~2-3 months. https://www.pfizer.com/news/press-release/press-release-detail/pfizer-and-biontech-announce-omicron-adapted-covid-19 https://www.pfizer.com/news/press-release/press-release-deta...