This is why there are already plans afoot for a third booster shot: https://www.nbcnews.com/health/health-news/third-pfizer-dose-covid-19-vaccine-maker-studying

This is why there are already plans afoot for a third booster shot: https://www.nbcnews.com/health/health-news/third-pfizer-dose-covid-19-vaccine-maker-studying-booster-shots-n1258775 https://www.nbcnews.com/health/health-news/third-pfizer-dose...